Magnum, P.I. (1980)

While working for a large corporation to investigate a case of computer espionage, Magnum is hired by one of the company's presidents to check out his wife, whom he suspects is having an affair. But Thomas finds himself in a compromising position of split loyalties when it turns out that the man that the woman is seeing is none other than Rick. Meanwhile, Higgins is expecting a visit from his once fiancée, and enlists Thomas' help in getting in shape before her arrival...