Who Is Number One?
- Jaro: 1917
- Lando: United States of America
- Ĝenro: Mystery
- Studio: Paramount Pictures
- Ŝlosilvorto: movie serial
- Direktoro: William Bertram
- Rolantaro: Kathleen Clifford, Cullen Landis, Gordon Sackville, Neil Hardin, Bruce Smith, Ethel Ritchie
