In the tradition of Sir Arthur Conan Doyle's Sherlock Holmes stories, this mystery by the author of the Winnie-the-Pooh book is set in the English countryside in a stately British mansion with an abundance of characters and curious clues.

At a high school party, a girl finds her best friend murdered, only to be discovered holding the weapon and accused of the crime.

After high school juniors Spencer, Emily, Hanna, and Aria think they have seen Ali, their missing and presumed dead friend, they pursue clues from a mysterious stalker, trying to find out if she is still alive.

When his sister disappears, Noah, along with their best friends, Ella and Richie, sneak into the neighborhood zoo and delve into the unknown world of the animals, where they discover a great secret that the zoo is protecting.

When one of her fellow Ladies-in-Waiting becomes mysteriously ill, Lady Grace Cavendish suspects the cause is poison and sets out to learn who is responsible.

Thirteen-year-old Q and fifteen-year-old Angela expect their lives to become complicated when his mother and her father, wildly popular musicians, marry, but not that they will face spies and terrorists in Philadelphia, Pennsylvania.

Four girls living in a wealthy suburb discover the identity of a stalker who has been sending them shocking text messages, and uncover the mystery of who killed their childhood friend.

Sabrina, Daphne, and Puck, stuck in the Book of Everafter, chase the Master through a series of stories, where they're willing to change what they need in order to save their baby brother. Soon, however, they are confronted by the Editor--the book's guardian--who, along with an army of tiny monsters known as Revisers, threatens the children with dire consequences if they don't stick to the stories. Faced with a challenge like this, will they be able...

Noah and his friends in the Secret Society join forces with four teens known as the Descenders to try to protect the Secret Zoo hidden below the Clarksville City Zoo from monstrous sasquatches and the evil Shadow Master.

When a teenaged girl with a bad reputation is murdered in New York City's Central Park after a party, her childhood friend is determined to solve the mystery of who caused her death.