Tricks of the Trade (1968)

A married man gets blackmailed by a degenerate couple after having a one-night threesome with them.

Producers
Original title	Tricks of the Trade
Directors	Andy Milligan
Writers	Gerald Jacuzzo, Andy Milligan

Cast

Mary Carter

as Salina Claret

Jonathan East

as Fred Claret

Natalie Rogers

as Dr. Pauline Flood