Synopsis: An insurmountable gambling debt is owed to crooked bar owner Bob Harmon by naive teenager Jimmy Rowell. Holding a stack of IOUs from Jimmy, Harmon threatens to ransack Rowell's family's homestead when the lad cannot pay up. Harmon is in cahoots with killer Bart Gills, and their crimes have drawn the attention of the Range Busters. Crash, Dusty and Alibi smell a rat and ride in to investigate.