Joseph Sinner, commonly referred to as Joe, wakes up in a hospital after a grisly gunshot nightmare. He has no memory of who he is or any of his friends and family. All he possesses is a keen eye for detail and the skills of an expert detective. Using his detection skills and the help of his young daughter Amy, he tries to solves cases that come his way in an attempt to find clues to his checkered past. Part 1: Sinner's Bullet. Joe investigates the mysterious deaths of patients to a hospital involving specific medical staff members. Amy gets caught up in a serious undercover smuggling operation at her school.