Meg Stanton rides a desk in the cold case unit with the Baltimore PD. Her day starts like any other—with parent-child struggles, a dire need for a large coffee and a partner who is a conglomerate of neuroses. However, it ends like no other day...with a dead body on the hood of her partner's car that signals a beginning of a strange journey of self-destructing bodies, all fitted with pacemakers that make them vulnerable to the killer.

Who is the mastermind behind all this? Who could callously use his fellow man as living guinea pigs for an ingenious new weapon? And how many people will have to die before Meg finds answers even as her life is unraveling around her...?