How many movies have Arthur Conan Doyle and Igor Efimov collaborated on?

They have worked on 15 movies together! Their first movie together was Sherlock Holmes and Dr. Watson (1979) while their highest rated movie together was The Adventures of Sherlock Holmes and Dr. Watson: Acquaintance (1979). They have not worked together since The Adventures of Sherlock Holmes and Dr. Watson: The Twentieth Century Begins, Part 2 (1986). They are most known for their crime films together.