Watch Sinners and Saints for Free: How to Stream the Movie Online at 123Movies. . In lawless storm ravaged New Orleans, eleaguered Detective Sean Riley is trying to cope with the death of his young son and the abandonment of his wife. Facing a probable suspension from the department, Riley is teamed with a young homicide Detective, Will Ganz, to help solve a series of brutal murders that have plunged the city into a major gang war. The two quickly realize there is something far more sinister going on than either could have ever imagined.