History BrotherSisterIncest / LiveActionTV

* On ''Series/{{Shadowhunters}}'', [[spoiler:Jace and Clary, who have romantic feelings for each other and have kissed numerous times, are actually brother and sister]] as revealed in the episode "Blood Calls To Blood".

* In Korean drama ''Moon Lovers'', princess Yeon-Hwa is dating and later engaged to one of her brothers, while being romantically interested in the other, and having a rather suggestive, Lady Macbeth-type relationship with the third one. [[spoiler:Later she marries the brother she desires and becomes his queen.]]

* ''Series/Juliet Bravo'': A drunk who fell asleep in a barn belonging to an isolated farm tells the police that the couple who own the farm are keeping a girl chained up: the police investigate, and the couple tell them that the girl, their daughter, is "simple" and confined for her own protection; on examination the girl turns out to be, not learning-impaired, but profoundly deaf; the couple admit to being brother and sister, and say that their daughter's handicap is divine punishment.

* At the climax of the canceled STARZ series ''Series/{{Camelot}}'', The BigBad [[GodSaveUsFromTheQueen Morgan Pendragon]] uses her magic to take the form of Guinevere so that her half-brother, [[TheGoodKing King Arthur Pendragon of Camelot]], will have sex and concieve an heir with her. She does this after her efforts to usurp him fail and she is deprived of her holdings. Her reasoning behind her [[BrotherSisterIncest act]] is that "the only way she can be a Queen is by giving birth to a King" - following that logic, Kings are usually the sons of Kings, and the only King in the land is Arthur, which limits Morgan's options.

* In ''Series/WizardsOfWaverlyPlace'', After Alex accidently makes everyone forget who Justin is, their mother unknowingly advises Alex to date Justin, because they look 'cute' together, which Alex finds quite disgusting. Her mother then tells her that she had the same opinion about the relationship with her husband at first, but he eventually became her '[[GettingCrapPastTheRadar big cuddly bug]]', which Alex finds even grosser, implying that [[FreudianSlip she believes having a romantic relationship with her brother is more acceptable than the idea of her parents having sex]].

* ''Series/{{Firefly}}''. In an amusing scene deleted from "Our Mrs. Reynolds", Simon is thrown for a loop by his sister's latest bit of loopiness.

* ''Series/{{Wiseguy}}''. International arms/drug dealers Mel and Susan Profitt. This causes problems when [[https://www.youtube.com/watch?v=uxEPOEIav1c Susan becomes attracted to the protagonist Vinnie Terranova]].

* In the BBC series of ''Series/RobinHood''...it's complicated. Technically no actual incest actually ''occurs'', but with the introduction of ''two'' [[LongLostSibling long lost siblings]], things get rather awkward. Robin starts a relationship with Isabella, and although the two of them aren't related by blood, it's later revealed they share a half-brother, and that Robin's father planned to marry Isabella's mother, meaning they were almost step-siblings. Furthermore, when the time comes for this long lost brother to introduce himself to his half-sister, the writers instantly make the relationship explicit in the hopes of sinking any incestual vibes. It doesn't work. Also, at one stage (during a heat wave) Isabella bathes Prince John's head with a cold pack, cooing the words "hot, hot, ''hot''." whilst smirking at Guy, her ''full'' brother, over John's head. In a later episode, Isabella drugs and gags Guy before tying him to her bed, and even later, Guy strokes her hair in a surprisingly intimate gesture.

* In an episode of ''Series/TheBill'', a sergeant and a constable (who is struggling with his own sexual repression) happen upon an apparent couple while searching for a kidnapped child. Turns out that the nervous couple have nothing to do with the missing girl, but are skittish for an entirely different reason. The constable is disgusted and wants to bring the two in, but the sergeant points out that they should be left in peace, as the siblings are miserable enough as they are- hiding from the world and taking care of their senile mother, who berates them and their relationship every chance she gets - and they're not doing any harm to anyone else.
* Very strongly hinted by Tubbs and Edward in ''Series/TheLeagueOfGentlemen'', to the point where Edward mentioned "''their'' mother".

* The Finale of ''Series/{{Smallville}}'' averts any chance of it having happened between Tess Mercer and her half-brother [[spoiler: Lex Luthor. Given her line a few seasons back, "I loved you, you son of a bitch," one wondered just what sort of relationship they had. However, Lex reveals in the finale that he knew all along that Lionel was her father.]]

* ''Series/KingdomHospital''. Hinted with Abel and Christa. ("We're all brothers." "We're all sisters.")

** A bit of unintentional (on one side) occurs when Theon Greyjoy returns home to the Iron islands and meets a young woman on the docks who says she'll take him to his ancestral castle of Pyke. On the way there, he flirts endlessly with her and starts fingering her on the horseback ride. Once he got to the castle, however, Theon gets a rude slap in the face when he learns that the young lass is his sister, Yara Greyjoy, and she was [[SecretTestOfCharacter trying to see what kind of man he was]], and is ''less'' than impressed by what she saw.

** In an aversion, the second season of ''Series/XenaWarriorPrincess'' went out of its way to establish that Xena was ''not'' Ares's daughter (though that was the simplest way to explain her general badassery) after hinting that she might be during the first season, perhaps because someone realized that Xena and Hercules had been lovers on the latter's show, and since Hercules and Ares were half-brothers, they didn't want to raise the spectre of incest (or cut off possibilities between Xena and Ares)

* ''Series/AnotherPeriod'' has upper-class siblings Beatrice and Frederick Bellacourt regularly jumping into bed with one another. Never mind that Beatrice has a husband (who is openly gay, and having his own affair ''with her sister's equally-gay husband''). Strangely, when Sigmund Freud (yes, ''that'' Sigmund Freud!) catches the two in bed together, he doesn't think it's a big deal.
* The 2015 mini-series ''Series/FleshAndBone'' has this as a central theme. Though in this case it's made pretty clear that it was rape - and a large part of the protagonist's DarkAndTroubledPast.
* On ''Series/{{Shadowhunters}}'', [[spoiler:Jace and Clary, who have romantic feelings for each other and have kissed numerous times, are actually brother and sister]] as revealed in the episode "Blood Calls To Bloods".

* ''Series/TheYoungAndTheRestless''. Victor can't put his finger on why he disapproves of his daughter's new boyfriend, until he realizes that the man is the son of a woman who was his mistress years ago. He does the math and realizes that there is a possibility that he could be the man's father. Unfortunately, the two have already eloped--and consummated the marriage. Fortunately a DNA test shows that he ''isn't'' the man's father after all.
* In Korean drama "Moon Lovers" princess Yeon-Hwa is dating and later engaged to one of her brothers, while being romantically interested in the other, and having a rather suggestive, lady-Macbeth-type relationship with the third one. [[spoiler:Later she marries the brother she desires and becomes his queen.]]

* Factored into one storyline on the soap opera ''Series/OneLifeToLive'', when a character named David showed up in Llanview claiming to be the biological son of the late Victor Lord. Victor's daughter Vicki was less than enthused, but her half-sister Tina quite liked David. David quite liked Tina, too... entirely too much for a brother. Making the situation even more awkward, David's claim was that he was Tina's ''full'' brother, sharing both mother and father with her. [[spoiler:They eventually slept together, and only afterward did he admit he wasn't her brother at all.]]

* ''Series/OneLifeToLive''. David Vickers comes to town with evidence indicating that he's the half-brother of local heroine Viki Lord and the full brother of ''her'' half-sister Tina. While Viki has her doubts and reservations, Tina instantly likes him--or is perhaps instantly attracted to him, an attraction that is reciprocated until they finally end up sleeping together. Tina is horrified at having committed incest and even more disturbed that David ''isn't''--until David admits that he actually is ''not'' her brother. Tina's relief at not having committed incest is quickly eclipsed by realizing that she still slept with a lying con-artist.
* In korean drama "Moon Lovers" princess Yeon-Hwa is dating and later engaged to one of her brothers, while being romantically interested in the other, and having a rather suggestive, lady-Macbeth-type relationship with the third one. [[spoiler:Later she marries the brother she desires and becomes his queen.]]

** Viserys was uncomfortably possessive of Dany's body, going so far as to strip her and fondle her. House Targaryen, to which they both belong, has practiced incest (mainly of the brother-sister variety) for generations "''to keep bloodlines pure''", similar to the royal family of ancient Egypt. However, Aerys and Rhaella represent the first time it had been practiced in more than a century. Even before that, it was by no means a given; Aenys I married a Velaryon, Maegor I many women but the closest relative was his niece (and none of them had any children, anyways), Viserys I an Arryn and a Hightower in succession, Rhaenyra I her cousin once removed (paternal grandfather's brother's daughter's son) then her paternal uncle, Aegon III his cousin followed by a Velaryon, Viserys II a Lyseni from Essos, Maekar I a Dayne, and Aegon V a Blackwood. Aerys II's father Jaehaerys II did marry his sister, but he has been adapted out of the TV series. That means that the only monarchs to marry their sisters were Aegon I (Dany's greatx10 grandfather), Jaehaerys I (her greatx8 grandfather), Aegon II (no direct relation as all of their children died but technically her greatx6 uncle), Baelor I (unconsummated, and therefore no direct relation, but her cousin five times removed), and Aerys II (her father). That said, many splinter branches of the family did marry their siblings, but these are the only monarchs to do so and two of them had their branches die out. In the novels it is implied that Viserys and Daenerys would have been married when they reached the appropriate age.

** Viserys was uncomfortably possessive of Dany's body, going so far as to strip her and fondle her. House Targaryen, to which they both belong, has practiced incest (mainly of the brother-sister variety) for generations "''to keep bloodlines pure''", similar to the royal family of ancient Egypt. In the novels it is implied that Viserys and Daenerys would have been married when they reached the appropriate age.

* A ''major'' plot point in ''Series/GameOfThrones'': [[spoiler:the fraternal twins Jaime and Cersei Lannister have been in a relationship since their childhood, and all of Cersei's children were fathered by Jaime, not her husband the king Robert Baratheon; she also sleeps with their cousin Lancel when Jaime is away fighting the Starks. Finally, the parents of said twins and their brother Tyrion were themselves first cousins.]] It's a wonder that the only genetic problem in that generation was Tyrion's dwarfism.

* In ''Series/WizardsOfWaverlyPlace'', Justin and Alex's mother unknowingly advises Alex to date Justin, because they look 'cute' together, which Alex finds quite disgusting. Her mother then tells her that she had the same opinion about the relationship with her husband at first, but he eventually became her '[[GettingCrapPastTheRadar big cuddly bug]]', which Alex finds even grosser, implying that [[FreudianSlip she believes having a romantic relationship with her brother is more acceptable than the idea of her parents having sex]].

** When the gang become just like the McPoyles in one episode, Dennis and Dee begin leering at each other lustily.

* The soap opera ''Series/{{Brookside}}'' had a controversial storyline in which brother and sister Nat and Georgia were revealed to have been lovers for years. They eventually moved to start a set up life together where no one knew they were related

* On ''Series/{{Lost}}'', Boone and Shannon are stepsiblings who [[spoiler: have slept together. Boone was also in love with Shannon.]]
* One episode of ''Series/{{House}}'' had [[spoiler: a young married couple whose similar illnesses were thought to be from exposure to the same environmental factor but turned out to be genetic; they were half-siblings through the husband's (white) father's affair with the wife's (black) mother, and had become attracted to each other as teenagers. The father's determined attempts to keep them apart were misinterpreted as disapproval of interracial romance, and the young couple ran away together before finding out they were related. It is intimated their relationship did not survive the revelation.]]

* In ''Series/BoredToDeath'', Jonathan goes looking for his real father and [[spoiler:meets and sleeps with a woman named Rose, he discovers later that she is in fact his half sister. He chooses not to tell her and it is implied that they carry on the relationship]]

** In still another SVU episode ("Identity"), a pair of adolescent twins are ''forced'' to enact incestuous sex by their therapist, who claims [[spoiler: it will help encourage the girl twin to think, respond and behave like a female, because she was born a male and had a sex reassignment in ''infancy'' after a surgical accident. This, of course, really happened to the late David (Brenda) Reimer and his twin brother.]] The twins are emotionally close, but not ''that'' close.

-->'''Chandler:''' ''[[CrowningMomentOfFunny What did I marry into?!]]''

* On ''Series/{{Passions}}'', sisters Whitney and Simone were both in love with Chad, who viewers were led to suspect was their half-brother, as the girls' mother, Eve, had a child with Julian Crane, but the child was kidnapped. Eventually, Chad and Whitney started a relationship (and Simone [[SuddenlySexuality became a lesbian]]) and Whitney got pregnant. Immediately thereafter, she and Chad learned that they were, in fact, brother and sister because Chad was Eve and Julian's missing child. After about two years of angst, they found out that Chad was actually the child of Julian's father and Eve's adopted sister, meaning that Chad and Whitney were [[NotBloodSiblings not blood siblings]] after all. As if to show that the trope had been averted only because the writers thought they could push the envelope further, they then brought on Eve and Julian's actual child, a [[VillainousCrossdresser psychopathic hermaphrodite]] named Vincent (who had been living in Harmony as the established character Valerie for several years), who proceeded to have an affair with his uncle Chad (both as Valerie and as Vincent, at separate times), rape his half-sister Fancy, and seduce and become pregnant by his own father.

* In "The Killings at Badger's Drift", an episode of the British television series ''MidsomerMurders'', [[spoiler: an old woman discovers a brother and sister in an incestuous relationship and they murder her to keep her quiet]]. Later, [[spoiler: a busybody and her son, who likes to know everyone's secrets and is not averse to a spot of blackmail, end up dying as well]]. In the end, [[spoiler: the brother and sister end up committing a double suicide.]]

* On ''Series/{{Casualty}}'', nurse Anna falls for someone only to discover that he's actually her long lost half-brother (given up for adoption). She tries to break up with him, but they eventually end up back together, leading to a pregnancy which they suspect is a very bad idea... [[spoiler: Then she dies horribly, neatly getting rid of both the abortion and incest moral dilemmas]].

* An early episode of ''Series/{{Heartbeat}}'' saw the police investigating a schoolgirl who had had an illegal abortion. They assumed the father was a boy from her class, even though it was obvious to the viewers that he was just a harmless loser with a crush on her. In the last five minutes, as she left town, the girl told the lead policeman's doctor wife in confidence that the actual father was her brother. Most viewers probably guessed this, since he was the only other person in the episode. (If the episode wasn't disturbing enough already, the schoolgirl was played by series star Nick Berry's real-life wife. The conversations at home during fiming must have been interesting to say the least.)

** In an even more recent episode, a psychotic killer was violently murdering members of two old rival families in the town. It turns out [[spoiler: the mother of the first victim from one family and the father of the first victim from the other family are brother and sister; the sister just left town and changed her name before marrying into the rival family. The reason she left town was because she got pregnant at 16... with her brother's child. That child, of course, became the serial killer that had been terrorizing the town.]]
* In ''Series/TheBorgias'', Cesare and Lucrezia Borgia are prime examples of this trope. It's fairly obvious that they do not have a typical sibling relationship. He's threatened to murder her husband, compared themselves to the star-crossed lovers Abelard and Heloise, stated that he would die if anything happened to her, and when asked by Lucrezia if he loves God, replied, [[CrowningMomentofHeartwarming "More than I love you?"]]. She's stated that she could never love a husband as much as she loves [[BigBrotherAttraction him]], once said that she, um, [[NotWhatItLooksLike missed his hands]], spies on him having sex, and, like him, cannot keep to her personal space. They often spend time bumping noses and cuddling and dancing while discussing terms of romantic endearment. The relationship is becoming VERY physical in season 3, when [[spoiler: They have sex in the third episode of the season.]]

* Almost happened with a story arc in ''UglyBetty''. When Amanda finds out that her biological mother was Feye Sommers, who had a long standing affair with Daniel's father, both she and Daniel are squicked out by the fact that they could be half-siblings because they had previously had a sexual relationship.
* On the ''Series/{{Dexter}}'' TV series, [[spoiler: Debra]] kisses her brother [[spoiler: Dexter]], although it [[AllJustADream turns out to be a dream.]] Partially justified by the fact that he's an adopted brother. [[spoiler: Then it turns out Deb loves him romantically.]]

* In ''Series/SonsOfAnarchy'' [[spoiler: Jax nearly has sex with his Irish half-sister before their relationship is revealed to both of them]]. Then again in Season 5 [[spoiler: Nero's bordello manager Carla turns out to be both his half-sister and to have a Yandere level crush on him. Whether they ever had sex in the past is left ambiguous.]]

** In a major twist it's revealed that [[spoiler:the disfigured prostitute's parents were actually siblings. They were run out of their town and lived in poverty for the rest of their lives. The brother turned cruel and abusive towards his sister and was killed by his inbred daughter after he is implied to have raped her.]]

** Though given that Lister [[spoiler: is his own father, this means he's the product of a mother and her son, a related trope.]]

* The 2015 mini-series ''Series/FleshAndBone'' has this as a central theme. Though in this case it's made pretty clear that it was rape - and a large part of the protagonist's [[DarkAndTroubledPast Dark and Troubled Past]].

* In ''Series/TheVampireDiaries'' and ''Series/TheOriginals'', vampire siblings Klaus and Rebekah have been in very dark and twisted love/hate relationship with each other for a thousand years and counting.

* A ''Series/CSIMiami'' episode played like the ''Law and Order'' episode above mixed with ''MarmaladeBoy'': a man has two families and his son and daughter fall in love. [[spoiler: The {{Squick}} comes in after they learn they're half-siblings and ''stay in the relationship anyway''. The half-siblings/couple kill dad when he wanted their unborn baby aborted.]]

** Additionally, GHB made Veronica forget the sex, and she woke up thinking she'd been raped. She tried to report it, but, without evidence or even possible suspects, the sheriff laughed her out of his office with his patented "Go see the [[Film/TheWizardOfOz wizard]] and ask for a backbone" line. After a long search, she found out that Duncan had sex with her. Duncan reveals that he remembers the whole thing, but always assumed that Veronica kept quiet because of the embarassment not because she didn't remember.

* Semi-averted in ''Series/VeronicaMars'': Duncan slept with Veronica shortly after (but not, let it be said, ''because of'') finding out she might be his half-sister, which caused him to break off their long-standing relationship without explanation (she wasn't). Veronica didn't find out about her possible parentage - or the fact that they'd slept together (she'd been accidentally dosed with GHB, as had he, which fueled the loss of inhibition) - until much later. They got back together once the whole incest thing was cleared up. (It should be noted that Veronica's taste in men could be charitably described as "quirky".)

* In ''WizardsOfWaverlyPlace'', Justin and Alex's mother unknowingly advises Alex to date Justin, because they look 'cute' together, which Alex finds quite disgusting. Her mother then tells her that she had the same opinion about the relationship with her husband at first, but he eventually became her '[[GettingCrapPastTheRadar big cuddly bug]]', which Alex finds even grosser, implying that [[FreudianSlip she believes having a romantic relationship with her brother is more acceptable than the idea of her parents having sex]].

* ''Somehow'' played with on ''HannahMontana''. Miley, in her alter ego as pop star Hannah Montana, is caught going in her own back door by a photographer. To keep her SecretIdentity under wraps, she claims to be "visiting a friend"... just as her brother Jackson comes out of the house, leading the paparazzi to assume that they're dating. It gets worse when Jackson realizes that being Hannah's assumed boyfriend has its perks, so he keeps the pretense going even after Miley (who is naturally mortified by the whole thing) repeatedly asks him to stop. He eventually feels guilty and backs down, but not before [[DoesThisRemindYouOfAnything proclaiming his love for her while jumping on the couch]].

* In the second season of ''PrisonBreak'', this is the ''other'' secret President Reynolds can't allow to become public. The first secret, of course, being faking her brother's death.

* ''{{Wiseguy}}''. International arms/drug dealers Mel and Susan Profitt. This causes problems when [[http://www.youtube.com/watch?v=uxEPOEIav1c Susan becomes attracted to the protagonist Vinnie Terranova]].
* An episode of ''PrivatePractice'' had a married couple who found out they were half-brother and sister (same sperm donor as a father), and then wanted to stay together and have the sister's tubes tied. The writers then pulled a ''DebateAndSwitch'' when it turned out the brother knew before the couple got married.

* Very strongly hinted by Tubbs and Edward in ''TheLeagueOfGentlemen'', to the point where Edward mentioned "''their'' mother".

* ''PrettyLittleLiars'' has this between [[NotBloodSiblings stepsiblings]] Toby and Jenna Cavanaugh. Oddly, [[spoiler: Jenna was the one pressuring Toby into sleeping with her, and he wanted it to stop. Unfortunately, nobody is willing to listen to his side of the story, and everyone assumes that he is the abusive one.]]

* In ''TheBorgias'', Cesare and Lucrezia Borgia are prime examples of this trope. It's fairly obvious that they do not have a typical sibling relationship. He's threatened to murder her husband, compared themselves to the star-crossed lovers Abelard and Heloise, stated that he would die if anything happened to her, and when asked by Lucrezia if he loves God, replied, [[CrowningMomentofHeartwarming "More than I love you?"]]. She's stated that she could never love a husband as much as she loves [[BigBrotherAttraction him]], once said that she, um, [[NotWhatItLooksLike missed his hands]], spies on him having sex, and, like him, cannot keep to her personal space. They often spend time bumping noses and cuddling and dancing while discussing terms of romantic endearment. The relationship is becoming VERY physical in season 3, when [[spoiler: They have sex in the third episode of the season.]]

* In an episode of ''{{Mongrels}}'', Nelson falls for his sister while she's in heat, going as far as to marry her, and spend the wedding night as you'd expect him to. Of course, once his sister comes out of heat, Nelson immediately regrets his decision.

* ''Series/AnotherPeriod'' has upper-class siblings Beatrice and Frederick Bellacourt regularly jumping into bed with one another. Never mind that Beatrice has a husband (who is openly gay, and having his own affair ''with her sister's equally-gay husband.'' Strangely, when Sigmund Freud (yes, ''that'' Sigmund Freud!) catches the two in bed together, he doesn't think it's a big deal.