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''The Secret of Platform 13'' is a children's book by Eva Ibbotson. Inside the abandoned Platform 13 in King's Cross Railway Station lies the Gump, an ancient and magical secret passage. Every nine years it opens to take those who wish to leave the world behind for the mythical island known as...The Island. The Queen gives birth to a son the year the Gump opens again and after the Prince's three nannies are overcome with homesickness, she allows them to take the Prince with them for a brief visit to our world.

What they don't count on is running into [[RichBitch Mrs. Trottle]], who desperately wants to have a baby...even if it means turning to kidnapping.

Nine years later, a young hag named Odge learns about the rescue mission being planned by the King to bring home his son, who has been raised by Mrs. Trottle as her son, Raymond. After much convincing she joins the appointed rescuers--Cornelius, Gerkintrude and Hans--in their journey to London. Their task will not be as easy as they thought however, as Raymond is not only constantly protected, but is also an extreme Royal Brat. Though they find immeasurable help from Ben, the grandson of Raymond's former nanny, and the many magical creatures in hiding, will it be enough to bring the Prince back to the Island before time runs out?

%%Works page in progress.
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!!Trope examples:
* AdaptationalHeroism: The Nuckelavee, who seems to be benign or at least fairly harmless [[spoiler:(and is driven away when Raymond insults it)]]. In the original folklore that the creature appears in, [[TheFairFolk it]] [[OmnicidalManiac is]] [[EldritchAbomination much]] [[PlagueMaster more]] [[NightmareFuel nightmarish]].
* AdultFear: One of the reasons the nanny fights so hard to stay alive is that she knows full well she's the only person left to protect Ben from Mrs. Trottle. [[spoiler:After she dies, two very creepy men are sent by Mrs. Trottle to forcibly take Ben to a BoardingSchoolOfHorrors.]]
** As horrible as Mrs. Trottle is, she gets subjected to this trope when she finds out that a group of strange people have been secretly meeting her son and trying to convince him to run away with them. Her first assumption - which is not unreasonable - is that they were planning to kidnap him.
* AmbiguouslyHuman: Many of the Island's unusual creatures, which is why they can move or travel around London without being noticed. The rescuers were specifically chosen with this in mind.
* CuteWitch: Subverted in name only. Odge is a hag with powers such as making people go bald, but unlike her sisters, she's considered pretty.
* DeathBedConfession: In the hospital, Nanny Brown writes Ben a note to be read after her death. [[spoiler:It reveals that he was kidnapped as a baby, cluing Odge to the fact that he's the real Prince]].
* DotingParent: Mrs. Trottle. She's many things, but she pulls out all the stops to make Raymond happy, even if that's exactly how he became such a brat.
* EvilIsPetty: The main reason Mrs. Trottle makes Ben's life so miserable? She hates that he outshines her precious child in any way.
* FatBastard: Both Raymond and his mother are examples of this.
* FoodPorn: The meal that, unfortunately, [[VillainousGlutton Raymond Trottle]] is eating when the travelers follow him around town. Given the most attention is the knickerbocker glory.
* GentleGiant: Hans.
* GoodIsNotNice: The harpies, hags and other monsters on the Island, who serve as something like a police force--if you do something wrong, ''they'' deal with you, and chances are you'll never repeat your mistake.
** The narration notes that Nanny Brown is not a particularly nice woman, but still a FriendToAllChildren.
* GranolaGirl: Gurkintrude. Being a fey, she has an even stronger connection to nature.
* HarpingOnAboutHarpies
* {{Have I Mentioned I Am a Dwarf Today}}: Melisande is a water nymph, not a mermaid. She keeps pointing to her feet to prove it.
* JumpingOutOfACake: The hotel Mrs. Trottle and Raymond hide at has a dinner act where a girl leaps out of a fake cake and does a dance of the seven veils for the patrons. [[spoiler:When the rescuers try to get closer without alerting Mrs. Trottle, one of the things they do is pay off the dancing girl and have Gertrude take her place.]]
* LawOfInverseFertility: Mrs. Trottle cannot get pregnant, so she eventually decides to adopt a child--and, when she realizes there's a waiting list, resorts to stealing one. [[spoiler:She finds out she's pregnant shortly afterward and makes Nanny Brown raise the kidnapped child instead]].
* MagicalSeventhSon: Odge is the seventh daughter of a seventh daughter. Her mother expected her to be an especially terrifying child; to her disappointment, Odge wound out being the least hag-like of her children.
* MamaBear: A villainous example in Mrs. Trottle.
* ModestRoyalty: The royal king and queen of the Island. Their mansion is even open to any guests who want to stay a night or two.
** At the end, [[spoiler:Ben]] is this as well. [[spoiler: He sets up a guest room for Odge, so she can live in the mansion with him, fixing it up with bat-themed wallpaper and a door for the pet mistmaker she gave him.]]
* MyBiologicalClockIsTicking: The main reason why Mrs. Trottle kidnaps the Prince after adoption doesn't work out.
* MyMasterRightOrWrong: Subverted with the former nanny, who ''really'' doesn't want to help Mrs. Trottle kidnap a baby. She ends up going along with it not out of loyalty, but because Mrs. Trottle threatens to frame ''her'' for the kidnapping if she doesn't comply.
* NeverMessWithGranny: One of Raymond's bodyguards is a little old woman who spends most of her time sewing. With very long, sharp needles, and she knows exactly what points on the body they'd be most effective.
* NiceGuy: Ben.
* RaisedByGrandparents: Ben was raised by his grandmother, Nanny Brown. [[spoiler:{{Subverted}} because she's not his real grandmother]].
* RidiculouslyCuteCritter: The mistmakers!
* RichBitch: Mrs. Trottle.
* RoyalBrat / SpoiledBrat: Raymond Trottle, the whole deal: tantrums, the room of broken toys, disrespect to anyone who isn't his mother, and there's nothing anyone can do about it since his parents are incredibly rich.
* SameSexTriplets: Lily, Rose, and Violet.
* ScareEmStraight: Mrs. Trottle to Raymond [[spoiler:after the magical show the Islanders put for him, and he starts wanting to go to the Island.]]
* StrangeSecretEntrance: The eponymous Platform 13.
* [[ThemeTwinNaming Theme Triplet Naming]]: Lily, Rose, and Violet.
* TheyHaveTheScent: Not said word for word, though. [[spoiler:How the Islanders find Mrs. Trottle--through the powerful smell of her custom-made perfume, Maneater, in the sewers.]]
* VillainousGlutton: While out at lunch with his mother Raymond orders fried prawns, soup, roast beef, Yorkshire pudding, fries, and an ice-cream sundae. Other times when he is out he is usually seen downing more.
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