I Dream of Jeannie (1965)

S4E14 The Case of My Vanishing Master (2)

Roger arrives just in time to halt the wedding, persuading Jeannie that the Tony she was about to marry is a fraud. Later, when the real Tony comes home, Jeannie, convinced he’s the impostor, puts him through a series of tests. After some convincing, Tony proves his identity. Just as he plans to confront the fake Tony, he discovers that the imposter is actually a double agent for a foreign government. Doctor Bellows and Roger struggle to identify the true Tony until Jeannie inadvertently reveals the impostor’s dentures, clearing up the confusion.