Malibu Express (1985)

Cody Abiliene is a semi-successful private detective desperately in need of a big (and well-paying) case. When he's hired to solve the murder of Contessa Luciana's husband, he jumps at the chance. In between investigating the many women around the Contessa's estate, Abilene eventually uncovers a complex case of espionage and blackmail. Written by Jean-Marc Rocher