During a short stopover in Kirby Gap, Kansas, West and Gordon decide to take part in a town-wide celebration sponsored by Amos and Eugenia Rawlins, local ranchers. In the midst of the festivities a shot rings out and, though the culprit seemed to be aiming for local banker Roger Creed, it's Mr. Rawlins who falls dead. The agents pursue the killer and lay hands upon Lucius Brand, who is subsequently convicted of the crime. Mrs. Brand, however, is convinced of her husband's innocence; the agents find themselves uncertain of the truth and decide to do a little investigating of their own.

!!Tropes present in this episode:
* AloneWithThePsycho: Artie finally gets the evidence he needs to clear Brand's name and takes it to the local prosecutor, Franklin Poore. [[spoiler:Unfortunately for him, the prosecutor is one of the conspirators against Brand.]]
* AmoralAttorney: [[spoiler:Franklin Poore. He helps frame Brand in exchange for money and political favors.]]
* ChessMotifs: Artie uses a chessboard to map out the crime scene and takes some trouble to choose an appropriately symbolic chess piece for each participant.
* ClearTheirName: Jim and Artie have to do this after becoming unwitting accomplices to a {{Frameup}}.
* CordonBleughChef: Mrs. Peacock, who forces Artie to suffer through two courses of inedible glop before she'll answer his questions.
* ExplainExplainOhCrap: Jim is unsure of the supposed murderer's guilt and Artie tries to explain to him why it's an open and shut case... only to end up convincing ''himself'' that ''Jim'' is right.
* GoldDigger: [[spoiler:Eugenia Rawlins. She's from a rich family which went bankrupt and married Rawlins solely for his money.]]
* MisplacedRetribution: The wife of the condemned man whom Jim and Artie are [[ClearTheirName trying to free]] decides to kill them for testifying against him at his trial. Luckily, Artie talks her out of it.
* MorallyBankruptBanker: Roger Creed. Not only did he foreclose Brand's farm [[spoiler:but he was part of the conspiracy to kill Rawlins and frame Brand for the murder.]] (For bonus points, he's played by Charles Lane, who was Mr. Potter's sidekick in ''Film/ItsAWonderfulLife''.)