Three years ago, FBI agent Erica Reed lost her brother to a serial killer who was never caught. During this desperate investigation, she developed the strange and unpredictable power of post-cognition: by touching an object, she can see its past and the events that happened on, to, or around it. Though undeniably useful in her line of work, this skill makes her uneasy and has caused her problems professionally and personally. Now a new serial killer is on the move—one who leaves behind clues perfectly suited to Agent Reed's unique abilities. Has someone learned her secret? What do they want from her? More importantly: by working this case, will Erica finally uncover enough evidence to bring her brother's killer to justice?