How many movies have David McCallum and Fred J. Koenekamp collaborated on?

They have worked on 8 movies together! Their first movie together was The Spy with My Face (1965) while their highest rated movie together was The Spy in the Green Hat (1967). They have not worked together since The Return of the Man from U.N.C.L.E.: The Fifteen Years Later Affair (1983). They are most known for their adventure films together.