Great mysteries for teens.
Chris is sure that his missing baby sister isn't dead, but he must find evidence to prove it.
Katie and George find themselves in the middle of a mystery when they must start attending a bizarre new school.
Valerian the magician searches for a book he hopes will save him from a pact he has made with evil.
When her mother disappears, 14-year-old Enola calls on her famous brothers for help, while trying herself to solve the mystery.
A tangled tale of romance and mystery set in medieval Italy.
One of the most controversial mysteries ever written, because of a simple plot device that tricks the reader.
While traveling in London, Paris, and Amsterdam, fourteen-year-old best friends Kari and Lucas solve an international art forgery mystery.
Sally Lockhart ventures into the shadowy underworld of Victorian London on the trail of a legendary ruby.