The Wild Wild West (1965)

S3E3 The Night of the Assassin

As tensions rise between the United States and Mexico, West and Gordon thwart an assassination plot targeting the Mexican President. While transporting the apprehended assassin back to Texas, they come under attack from Mexican soldiers commanded by the ruthless Colonel Barbossa. Just before being captured, the assassin swallows a pill from Gordon that induces a death-like state. Disguised as a priest, Gordon then sneaks into the prison in a wagon to retrieve the supposed corpse of the prisoner.