One is chasing justice. One is chasing the past. Both are being followed.

Deep beneath London, urban explorer Connie Darke stumbles across a mutilated body in the city’s decaying sewer system. Moments later, a strange whistling sound follows her through the tunnels—low, eerie, impossible to trace.

DI Lew Kirby is assigned the case. The victim is a wealthy financier with no clear reason to be underground—and no shortage of enemies above it. As Kirby investigates, Connie uncovers chilling new clues about the unexplained death of her sister. Both are drawn deeper into a world of hidden networks, buried secrets, and obsession.

And someone out there is watching them both, following them both…

As the city’s hidden layers begin to crack open, Kirby and Connie must confront the terrifying possibility that whoever, or whatever, is stalking them has been waiting a long time to emerge.

S W Kane studied History of Design and worked at the RIBA before taking on a series of totally unrelated jobs in radio and the music industry, where she still works as a freelance music PR. She began reading crime fiction from an early age and developed an obsession with crime set in cold, remote places. A chance encounter with a derelict fort in rural Pembrokeshire led to a fascination with urban exploration, which in turn became the inspiration for her novels. She now lives in Cornwall.