Meg Stanton rides a desk in the cold case unit with the Baltimore PD. Her day starts like any otherwith 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 daywith 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.