She soon learns that she is a Rook, a high-ranking member of a secret organization called the Chequy that battles the many supernatural forces at work in Britain. She also discovers that she possesses a rare, potentially deadly supernatural ability of her own.

In her quest to uncover which member of the Chequy betrayed her and why, Myfanwy encounters a person with four bodies, an aristocratic woman who can enter her dreams, a secret training facility where children are transformed into deadly fighters, and a conspiracy more vast than she ever could have imagined.

Filled with characters both fascinating and fantastical, THE ROOK is a richly inventive, suspenseful, and often wry thriller that marks an ambitious debut from a promising young writer.