The Whistler

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 c...