When Roman wants to trade Reese for Rayborn, whom he's convinced is still alive, Crews launches a covert crusade to find his partner, which brings him answers to long-standing questions along the way.
When the wife of a prominent campaign runner is murdered, Crews and Seever wonder if her death is related to a controversial gun ban initiative that she spearheaded.
Crews and Seever are under pressure to solve the murder of an assistant coroner; a murder that if left unsolved, could jeopardize all of their closed cases.
Crews and Starks investigate the murder of an Iraq war soldier who despite being killed in broad daylight on a crowded sidewalk, no one witnessed the crime.
Reese receives and offer to join an FBI organized crime task force, leaving Crews and Stark to partner up. The former partners work on a case of a philandering financial advisor who was murdered and discover a case of corporate and political corruption.
Crews and Reese begin their investigation and discover the victim was running an elaborate construction scam that left his clients without roofs or money.
After a Space Shuttle pilot is found shot to death after managing to land his private plane, Crews and Reese must determine if it was suicide or murder.
While investigating a triple execution-style homicide, Reese and Crews go up against an old nemesis, a Russian mob boss who has woven a deadly and wicked web.
A food bank delivery man is found murdered and buried up to his neck, surrounded by flower petals in a backyard. Crews and Reese believe the incident may be related to a cult from the 1970s. Crews confronts Mickey Rayborn, despite warnings from the FBI.