A bomb at a factory. A new case. Morgan will do anything to stop her world from spinning out of control.

With Mr. Jimmy's case still on her plate, Agent Morgan Stone isn't sure she wants to take on a second. Focusing on Jimmy's young victims, she has little interest in a bomb that goes off in Chicago. With an end to restricted duty in sight after last winter, Morgan finds herself thrust into a new case she doesn't want.

She has no option but to liaison with Detective Fiona Wexford and potentially ruin the tentative friendship they've been building. With her career, love life, and friendships crumbling around her, Morgan wonders, does she still have what it takes to stop a mad bomber?