Mystery of Room 422
| MPAA Rating: | NR |
| Genre: | Mystery, Short |
| Country: | United States |
| Directed By: | Robert Ellis |
| Written By: | Robert Welles Ritchie |
| Cast: | Robert Ellis, Ollie Kirby, George Larkin, Harry Gordon |
| In Theaters: | Oct 13, 1917 |
Followers: 0
| MPAA Rating: | NR |
| Genre: | Mystery, Short |
| Country: | United States |
| Directed By: | Robert Ellis |
| Written By: | Robert Welles Ritchie |
| Cast: | Robert Ellis, Ollie Kirby, George Larkin, Harry Gordon |
| In Theaters: | Oct 13, 1917 |