Justice (2011)

S1E32 The Assassin

Bill Doolin, a recently freed outlaw, comes back to Tombstone only to find that his wife has been abducted. Her captors are the relatives of a man facing murder charges, with Clay Hollister set to testify against him. The kidnappers demand that Doolin eliminate the Sheriff in exchange for his wife's freedom, forcing him into a deadly dilemma that tests his resolve and morality.