Sam investigates a series of fatal robberies at cash-checking stores while evidence points to someone in the squad being involved.

The murder of a returning Vietnam veteran has Lieutenant Hunt outraged, as he demands a quick resolution to what quickly becomes a complicated and controversial case. As Sam and the squad's team of detectives explore the circumstances surrounding the homicide, Tyler is sent down a mysterious path that may provide clues about his own family's past and why he is back in 1973

Sam finds his mother, Rose, in debt to a local mobster known for killing women that cause him trouble. Sam finds out the cops of the 125 are in cahoots with the mobster and ignore his illegal activities for tips on other mobsters.

Crime hits home after Ray and Chris are shot by a gang member. When the shooter is found dead near a bar, Sam becomes the lead suspect since he has been working undercover as part of the gang. With evidence mounting against him, Sam must search for the real killer before it's too late for him

When Sam Tyler receives a phone call that presents him with three tasks he must perform so he can return to his life in the future, he must weigh his alternatives and decide whether to stay in 1973 or go home.