Sequel to: The echo man.

"When DCI Adam Bishop arrives at the crime scene in the dead of night, the sight of the body is bad enough--but what Adam notices next chills him to his core. More bodies surface. And the spray-painted numbers daubed above the corpses reveal the horrific truth: the killer is counting down. But to what end? Adam has no idea--until Dr. Romilly Cole knocks on his door with damning evidence pointing to a series of murders twenty five years earlier--a case she knows intimately from her past. Now, it's personal--and the next knock on his door could be fatal" -- Provided by publisher.