Crime, Mystery | April 1, 1921
Crime, Mystery | April 1, 1921
| Producers | Stoll Picture Productions |
| Original title | The Resident Patient |
| Directors | Maurice Elvey |
| Writers | William J. Elliott |
as Sherlock Holmes
as Dr. John Watson
as Blessington
as Insp. G. Lestrade
as Moffat
as Dr. Percy Trevelyan