S3·E24 The Night of the Death Maker

An attempt to assassinate President Grant is foiled at the last minute by West and Gordon. However,there seems to be more going on than a simple assassination,as the weapon used in the attempt was one stolen in recent raids on government and territorial armories. The President refuses to cancel a trip to Dever,leaving Jim and Artemus only 36 hours to uncover who is responsible and stop them before it's too late.