When a strange woman shows up on Randi's doorstep with a mysterious, rusted lockbox, claiming it was owned by the infamous Chicago gangster Al Capone and, more recently, tied to her husband's death, Randi is thrust into the middle of an almost century-old mystery. Inside the box, names on tags attached to safe deposit keys lead Randi down a dark path filled with secrets, illegal activities, and murder. Unfortunately for Randi, someone is willing to kill for those keys, and she's the primary target. Now, she must figure out who these people are, their connection to Capone, and what is inside the safe deposit boxes-before she becomes the next casualty.