Montana Marshal Seth Bullock relocates to a gold-mining camp, where he crosses paths with Wild Bill Hickok and clashes with the boss of the Gem Saloon.
A Senate committee questions the members of the BAU team; a familiar face may help keep the team united.
A blackmailer surfaces and demands ransom for a sex tape featuring one of the Darlings; Patrick must end his affair with Carmelita; Brian's wife figures out that the "Swedish orphan" he brought to live with them speaks English.