Jim and Whitey find a stray Pony Express Mail Pouch. What happened to the rider who was carrying it? Riders ride fast, and hard, but never lose their mail bag. Using fake names, our heros go undercover. Plenty of shady doings are turned up, but will Jim play his hand too soon?
His moral side has him joining a posse to help the local lawman track down a killer. Who can be trusted as the gang is flushed out? Our heros cling to their cover, at the price of having Whitey cool his jets in jail, while Jim roars into action. Using the sneaky, backstabbing nature of outlaws, Jim sets the criminals free, and follows them to their secret lair. Slink along, and do some spying as you help Jim outsmart the gang.