Mission: Impossible (1966)

S1E13 Elena

Elena Del Barra, a double agent, is behaving oddly as she sends out a microfilm containing sensitive defense information from her own nation. To investigate and retrieve the microfilm discreetly, Rollin is called in. The situation worsens when a hitman named Callao is dispatched to eliminate Elena unless Rollin can solve the mystery within two days. Rollin persuades her to consult with his ally, Dr. Enero, who uses hypnosis to uncover that Elena is under a post-hypnotic suggestion to betray her close friend, the President. With the clock ticking, Rollin must recover the microfilm, identify the traitor, and save Elena.