Detective Helen Grace faces her own dark compulsions in the new thriller from the international bestselling author of Pop Goes the Weasel and Eeny Meeny. In a world where disguises and discretion are the norm, and where one admission could unravel a life, a killer has struck and a man is dead. No one wants to come forward to say what they saw or what they know-including the woman heading the investigation: Detective Helen Grace. Helen knew the victim. And the victim knew her-better than anyone else. And when the murderer strikes again, Helen must decide how many more lines she's willing to cross to bring in a devious and elusive serial killer.