The Strange Case of the End of Civilization as We Know It (1977)

In The Strange Case of the End of Civilization as We Know It, John Cleese stars as the grandson of Sherlock Holmes, enlisted to thwart the nefarious plans of a descendant of Professor Moriarty. Costars include Joss Ackland, Connie Booth, Denholm Elliott, Arthur Lowe, and Ron Moody.