How many movies have Christian I. Nyby II and Lee David Zlotoff collaborated on?

They have worked on 2 movies together! Their first movie together was U.S. Marshals: Waco & Rhinehart (1987) while their highest rated movie together was Perry Mason: The Case of the Avenging Ace (1988). They have not worked together since Perry Mason: The Case of the Avenging Ace (1988).