Lust Incorporated (1988)

When Robert Laughton, a smart U.S. manager on a business trip, picks up the keys to his residence, he doesn't yet know what he's in for. A couple of penniless freaks turn up at the estate agent's and steal the second key to Laughton's house. Wild orgies follow, but then Laughton's wife gets word of her unfaithful husband's escapades.