Provenza plays the role of a hitman, going undercover to get to the bottom of a murder for hire. Things quickly spiral out of control when the contract victim turns up dead and the evidence is stolen with Provenza's car. The team must act quickly to figure out what happened to save Provenza and his job.
When thousands of dollars are found hidden in Grace's Porsche, the ensuing investigation swirls around a moneyed developer, a slain highway patrolman, and inquiries into previous owners---one of whom is noted football coach Barry Switzer (appearing as himself). Meanwhile, the entire squad is emotionally impacted by news that Ham's brother has vanished in Afghanistan.