'"The body you are wearing used to be mine."
'So begins the letter Myfanwy Thomas is holding when she awakes in a London park surrounded by bodies all wearing latex gloves. With no recollection of who she is, Myfanwy must follow the instructions in a series of letters her former self left behind to discover her identity and track down the agents who want to destroy her.
'She soon learns that she is a Rook, a high-ranking member of an MI5ish secret organisation called the Checquy that battles the many supernatural forces at work in Britain (who knew?). She also discovers that she possesses a rare, potentially deadly supernatural ability of her own.
'In her quest to uncover which member of the Checquy betrayed her and why, Myfanwy encounters such wacky folk as a person with four bodies, an aristocratic woman who can enter her dreams, a secret training facility where children with bizarre traits are transformed into Checquy operatives, and a conspiracy more vast than she ever could have imagined.' (From the publisher's website.)