How many movies have Arthur Conan Doyle and Earle Cross collaborated on?

They have worked on 4 movies together! Their first movie together was Sherlock Holmes and the Valley of Fear (1983) while their highest rated movie together was Sherlock Holmes and the Baskerville Curse (1983). They have not worked together since Sherlock Holmes and a Study in Scarlet (1983). They are most known for their animation films together.