The Silver Chair by C.S. Lewis

Through dangers untold and caverns deep and dark, a noble band of friends is sent to rescue a prince held captive. But their mission to Underland brings them face-to-face with an evil more beautiful and more deadly than they ever expected.

The Silver Chair is the sixth book in C.S. Lewis' The Chronicles of Narnia, a series that has become part of the canon of classic literature, drawing readers and listeners of all ages into a magical land with unforgettable characters for over 50 years. This is a stand-alone novel, but if you want to discover what happens in the final days of Narnia, listen to The Last Battle, the seventh and concluding book in The Chronicles of Narnia.