The Andy Griffith Show (1960)

S3E32 The Big House

Andy receives a directive to hold two notorious criminals in his jail until detectives from Tennessee arrive to transport them. Anticipating an escape attempt by the bandits' accomplices, Barney notices two shady figures lurking near the jail and quickly apprehends them. However, he soon discovers they are actually the Tennessee detectives, inadvertently allowing the bandits' true allies the chance to execute their rescue plan.