Molly Moon's Incredible Book of Hypnotism is a book about a British preteen living in a terrible orphanage. Just before her only friend is adopted and moves to America without saying goodbye, she finds a rare book on hypnotism. She heads off to America to find her friend, hypnotizing people all the way. Meanwhile, a sinister wanna-be hypnotist stalks her...and he is willing to do anything to get the book in his hands.Followed by five sequels, Molly Moon Stops the World, Molly Moon's Time-Traveling Adventure, Molly Moon, Micky Minus, and the Mind Machine, Molly Moon and the Morphing Mystery, and Molly Moon and the Monster Music.
Brainwashed and Crazy: While most of Molly's victims never stray beyond Hypno Fool, there are instances where some of them border on this trope. Many of the characters hypnotized by the villains play the trope straight.
The reason that Molly is a more powerful hypnotist than me mother is that her mother is a twin and therefore split her powers with Cornelius. Then in book four, we find out that Molly is in the exact same situation as her mother.
In the first book, the password to lock in hypnosis is "perfectly punctual," referenced explicitly because Lucy says it to Molly when she shows up precisely on time. All future books give the password as "perfectly punctually," and the ungrammatical nature of the two words is a plot point.
In the first book, the name of the book Molly reads to learn hypnotism is titled Hypnotism: an Ancient Art Explained. In the second one, it's referred to as The Book of Hypnotism, although sometimes it adds the "An Ancient Art Explained" part.
Compelling Voice: Anyone who can hypnotize people in this universe has either this or Hypnotic Eyes. In Molly's case, it's a combination of the two.
Charm Person: Molly meets a young actress in the first book that has this. She does it unconsciously, through eye contact, and it's implied that's how she became so famous. Molly endoes a hypnosis battle with her.
Chekhov's Skill: Rocky has a talent for imitating voices, and he and Molly often play out radio commercials for fun. This plays a huge part in their Batman Gambit at the end of the first book.
Demoted to Extra: Rocky becomes less significant in the plots as the books go on. This is Lampshaded by Rocky himself in the fourth book (shortly before he is kidnapped and hypnotized by the villain and is forced to use his powers in their service).
Freudian Excuse: In fact, just about every antagonist in the first book (and several in the later three) turn out to have a Freudian Excuse for their horrible behavior — most often they're mean because life hasn't treated them well. For instance, Hazel states the reason she is a bully is because her parents never cared for her even when they were alive.
Gambit Pileup: In Molly Moon Stops The World, Molly is sent to stop a ruthless tycoon called Primo Cell from taking over the world with hypnosis. It's revealed towards the end that Cell was himself hypnotized by Cornelius Logan to take over the world for him. It's then revelaed in the next book that Cornelius himself was hypnotized by the Maharaja of Waqt to hypnotize Cell to take over the world for him.
Good Feels Good: Molly tries to invoke this trope several times by hypnotizing the villains with freudian excuses into becoming nice and hoping they'll remember the feeling once the hypnosis wears off.
The most obvious example of this is Nockman, whose experience with the trope is described in detail in the last part of the first book, and who in the second book is shown to have truly become a kind and loving man.
Hypno Fool: Not surprisingly, a lot of people end up as this.
Hypno Pendulum: Molly eventually buys one from an antique store, but she uses her own "homemade" ones early on: the stirring of a spoon (on Edna) and a piece of soap on a string (tries to use this on Hazel, but fails).
Long-Lost Relative (spoilers for all four books): Molly goes from having no family to discovering her mom (Lucy), dad (Primo Cell), her evil uncle (Cornelius), twin brother (Micky), and half-siblings through adoption (Sinclair and Sally Cell)
Non-Human Sidekick: Petula the Pug. Originally she's the bad-tempered, pampered pet of Ms Adderstone, but Molly discovers that the reason she's bad-tempered is that she's improperly fed and suffering from constant stomachaches. She's the first creature Molly successfully hypnotizes, but even after the trance is over Petula ends up attatching herself to the girl, becoming her constant companion for the rest of the series.
Shown Their Work: While most of the things that Molly does with hypnotism are flat-out not possible, the author very clearly researched hypnotism while writing the book. The passage in the first book about natural trances is legit; the foreshadowing of the concept in Molly's daydreams will automatically show anyone familiar with the field that the author Did The Research. The Rule of Cool takes over shortly afterward.
Spoonerism: The Maharaja of Waqt in Molly Moon's Hypnotic Time Travel Adventure often speaks using spoonerisms.