How many movies have Dan Kopper and Raymond Burr acted in together?

They have worked on 4 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 Skin-Deep Scandal (1993). They have not worked together since Perry Mason: The Case of the Skin-Deep Scandal (1993). They are most known for their tv movie films together.