Harry Potter and the Chamber of Secrets by J.K. Rowling
It's Harry Potter's second year at Hogwarts' School of Witchcraft and Wizardry. During the annual Halloween feast, a message written in blood is found on the walls of the school announcing the Chamber of Secrets has been opened. A murderous monster is set loose in the school, and Harry and his best friends have to solve the mystery, save the victims, and defeat the evil creature before it kills someone.
Miss Peregrine's Home for Peculiar Children by Ransom Riggs
When Jacob was little, his grandfather used to tell him stories from his childhood about growing up on an island in Wales, in a home full of peculiar children with strange powers. He told Jacob about how they all had to hide in a house on the island because they were running from monsters. When Jacob was young he believed the stories but as he got older he realized his grandpa made them up. When Jacob is a young teenager, his grandfather suddenly dies under mysterious circumstances and his last words leave Jacob wondering if his stories really were true.
Before I Fall by Lauren Oliver
Samantha is a popular teenage girl who dies in a car crash driving home from a party one night. The next day she wakes up to relive the last day of her life, Groundhog Day-style. Sam continues reliving her last day, and learns that by making different choices she can change what happens. The reader gets pulled into this thriller, attempting to solve the mystery alongside the main character.
Unwind by Neal Shusterman
In this futuristic dystopia, abortion is illegal but between the ages of 13 and 18 your parents can choose to have you "unwound" - a process that extracts your organs and transplants them into the bodies of people who need them, meaning that your life doesn't technically end, just continues in a different way. The book follows three teenagers who are scheduled to be unwound.
Wicked: The Life and Times of the Wicked Witch of the West by Gregory Maguire
A fictional biography of Elphaba, the Wicked Witch of the West. The book follows her story from birth to death, including her childhood and adolescence, showing how she became wicked. It features characters from The Wizard of Oz but also gives an alternate side to the story and details the politics, economics, and corruption in Oz, and explores ideas of good and evil.
Dance Dance Dance by Haruki Murakami
The narrator of this novel is compelled to return to a hotel he once stayed at with a woman he loved who has since disappeared. Over the course of the novel he meets a clairvoyant teenage girl and a cast of other strange characters. He is visited in dreams(?) by the missing woman, and a truly terrifying figure called The Sheep Man, and has to solve two mysteries, including a murder.