The decaying Marshall Street Baths in the heart of Soho are a den for drug-users and the homeless - the perfect hang-out for a teenage runaway. But when DI Jessie Driver goes there in search of a missing girl, she finds something quite different: the mummified body of a man, buried in the rat-infested basement. Who was he? And how does this murder relate to the tragic drowning of a young boy years earlier?
Jessie's investigation takes her on a journey through the past - the kidnapping of a little girl; the descent into madness of a bereaved father - but the dangers she'll face are very much in the present.