How many movies have Christian I. Nyby II and Kerrie Keane collaborated on?

They have worked on 3 movies together! Their first movie together was Perry Mason: The Case of the Scandalous Scoundrel (1987) while their highest rated movie together was Perry Mason: The Case of the Ruthless Reporter (1991). They have not worked together since Diagnosis Murder: The House on Sycamore Street (1992). They are most known for their crime films together.