When Echo's old librarian friend is in trouble, Echo and the Bat Pack rush to his home, Castlerock, to help. Now they must solve an ancient mystery.

When Becca wants to take dance lessons, Echo and the rest of the Bat Pack have to help uncover a mystery involving her dance instructor and a strange new neighb

A ghost is making a mess of the library at Castlerock, and Echo's old friend, the librarian, is about to lose his job so it is up the Echo and the Bat Pack to f

By the New York Times bestselling author of The Bone Clocks and Cloud Atlas A gallery attendant at the Hermitage. A young jazz buff in Tokyo. A crooked British

Echo needs his new friends to help him uncover who's been searching for treasure in the cemetery.