Magnum, P.I. (1980): Season 4, Episode 14

4 - 14: Rembrandt's Girl

Magnum finds himself locked into a mystery when a bank teller accidentally traps the two of them in a time-release vault at Robin Master's bank. Inside, they find large amounts of counterfeit bills, which the teller believes is proof that her father, a world-famous painting forger, is back in business.