| Sketch | The Forgotten Memoirs of Sherlock Holmes The Case of the Scarlet Membrane |
| Michael Palin | ... | Orson Welles |
| Michael Palin | ... | Sherlock Holmes |
| Terry Jones | ... | director Voice |
| Dan Aykroyd | ... | Dr. Watson |
| John Belushi | ... | constable |
| Jane Curtin | ... | Mrs. Hudson |
| Bill Murray | ... | Inspector LeStrade |
| Gilda Radner | ... | Sarah Hammercrack |
| Don Pardo | ... | announcer Voice |