Moonlighting S01.E06 The Murder's in the Mail

O.A.D. April 2, 1985 . "The Murder's in the Mail"
.
David and Maddie do some moonlighting of their own for a debt collection agency when Blue Moon is short of money. They discover that one of the debtors has been killed, but when they return with the police, the body has disappeared and a completely different man is at the scene claiming to be the client. This leads the duo to become involved in an assassination plot and in order to save the suspected victim, whom they know is a Chinese man with a mole on his nose, they must get into a formal dinner event where their successful effort to prevent the murder culminates in a huge food fight amongst all the event's attendees.