Who Is Number One?
- Bliain: 1917
- Tír: United States of America
- Seánra: Mystery
- Stiúideo: Paramount Pictures
- Eochairfhocal: movie serial
- Stiúrthóir: William Bertram
- Caitheadh: Kathleen Clifford, Cullen Landis, Gordon Sackville, Neil Hardin, Bruce Smith, Ethel Ritchie
