History YMMV / ArrowS7E13StarCitySlayer

* {{Narm}}: The rest of Team Arrow arriving literally one second after Stanley is taken out, playing out like the whole trick with the bottle would have been pointless if Felicity hadn’t deliberately pushed his BerserkButton.

* AlasPoorScrappy: Dinah's never been popular, but it's hard not to feel sorry for her after her throat is slashed by Stanley and she loses her powers as a result; she may not have been StuffedIntoTheFridge like Sara and Laurel were, but given she's the ''third'' Canary on the show it's still a pretty humiliating treatment.

* ClicheStorm: The climax of the episode, where Team Arrow investigates the "abandoned" building for a serial killer with an ominous thunderstorm in the background, is rife with classic horror movie tropes, [[LetsSplitUpGang one of which]] Curtis even [[LampshadeHanging lampshades]]. [[TropesAreTools But]] face it...''[[NightmareFuel/{{Arrow}} it works]]''.

* AlasPoorScrappy: Dinah's never been popular, but it's hard not to feel sorry for her after her throat is slashed by Stanley and she loses her powers as a result; she may not have been StuffedIntoFridge like Sara and Laurel were, but given she's the ''third'' Canary on the show it's still a pretty humiliating treatment.

* WordOfGod: Even though Blackstar goes by Mia Smoak in favor of Mia Queen and explicitly calls herself Felicity's daughter, her actress Katherine [=McNamara=] has [[https://www.etonline.com/meet-mia-smoak-arrow-star-katherine-mcnamara-dishes-on-playing-oliver-and-felicitys-daughter-119398 confirmed]] that she is Felicity's daughter with Oliver.

** Despite fan theories varying from Thea and Roy or Black Siren and Earth-2 Oliver Queen, the most popular theory was that Blackstar was related to Oliver and Felicity.

* IKnewIt!:

** Despite some fan theories ranging from Thea and Roy to Black Siren, the reveal that Blackstar is actually Oliver and Felicity's daughter could've been seen coming a mile away.

* RealLifeWritesThePlot: Black Siren doesn't appear in this episode due to Katie Cassidy putting on the finishing touches and eventually getting married during the shoot dates.

* WordOfGod: Even though Blackstar goes by Mia Smoak in favor of Mia Queen and explicitly calls herself Felicity's daughter, her actress Katherine McNamara has [[https://www.etonline.com/meet-mia-smoak-arrow-star-katherine-mcnamara-dishes-on-playing-oliver-and-felicitys-daughter-119398 confirmed]] that she is Felicity's daughter with Oliver.

* WordOfGod: Even though Blackstar goes by Mia Smoak in favor of Mia Queen and explicitly calls herself Felicity's daughter, her actress Katherine McNamara has confirmed that she is Felicity's daughter with Oliver.

* JerkassWoobie: Stanley Dover might be a deranged killer, but he was horribly abused during his childhood and he's genuinely mentally ill and he should definite be in an asylum than a HellholePrison like Slabside which can only exacerbate his mental illness.

* JerkassWoobie: Stanley Dover might be a deranged killer, but he was horribly abused during his childhood and he's genuinely mentally ill and he should definite be in an asylum than Slabside.

* CaptainObviousReveal: In the comics the Star City Slayer is the title given to Stanley Dover, so anyone with even a passing knowledge of this could put two and two together long before TheReveal in the episode's climax.

* JerkassWoobie: Stanley Dover might be a deranged killer, but he was horribly abused during his childhood and he's genuinely mentally ill and he should definite be in an asylum than Slabside.
* LikeYouWouldReallyDoIt: Felicity is revealed to be alive in the BadFuture which really comes as a surprise to nobody.

* LikeYouReallyDoIt: Felicity is revealed to be alive in the BadFuture which really comes as a surprise to nobody.