A woman of twenty-one opens her grandfather's will left to her thirteen years earlier, per his instructions. Murder soon follows.
You can now watch The Mystery of the 13th Guest online on the following streaming providers in the United States.
| Directing | William Beaudine | Director |
| Writing | Tim Ryan | Screenplay |
| Writing | Charles R. Marion | Screenplay |
| Writing | Arthur Hoerl | Screenplay |
| Writing | Armitage Trail | Novel |
| Camera | Mack Stengler | Director of Photography |
| Sound | Edward J. Kay | Music Director |
| Editing | Carl Pierson | Editor |
| Sound | Glen Glenn | Sound Recordist |
| Production | Lindsley Parsons | Producer |
| Production | Charles J. Bigelow | Associate Producer |
| Production | William Strohbach | Production Manager |
