Gunslinging U.S. Marshal Raylan Givens faces off against his oldest friend in Harlan, Kentucky, a 21st Century Wild West.

In tracking a vanished confidential informant, Raylan goes against a pair of violent ex-cons who are just dying for a showdown with "The Kentucky Cowboy."

Raylan leaves to California to follow the trails of a criminal who has evaded him twice in the past, and Raylan is determined that the third time won't be the same.

Raylan's father is arrested in the wake of a confrontation with the tenant of a house he and Raylan's stepmother own.

After an apparent suicide on an opulent Kentucky horse farm, Raylan must resist the sexy widow as he searches for the dead man's missing art.

Raylan foils an attempt on Ava's life and vows to find out who was behind it. Later, Raylan finds out that Ava may not have been the target.

When a murderous inmate takes hostages, Raylan must scramble to defuse the situation before the bullets start flying.

Raylan has a few drinks and gets himself beaten up, after being suspended as a Marshall. He pulls himself together and decides to jeopardise his career further by going after the thugs who have been harassing his ex-wife's new husband.

Determined to repair the damage he's done, Raylan takes time away from his assignment bodyguarding an eccentric judge to track down an old lead.

When Boyd Crowder and his crusaders become vigilantes, Raylan takes it upon himself to try to shut them down.

In order to work for the Marshal's Office, Raylan's dad Arlo agrees to become a double agent and work for Bo Crowder. Meanwhile, Bo sets up a meth lab to get back in business.

In the season finale, things come to a head in Harlan when the worlds of Raylan, Boyd and Bo Crowder collide.