The Great Office Mystery
- Bliadhna: 1928
- Dùthaich: United States of America
- Seòrsa: Crime, Drama
- Stiùidio: British Filmcraft Productions
- Faclan-luirg: sexton blake
- Stiùiriche: George A. Cooper
- Cast: Langhorn Burton, Mickey Brantford, Fred Raynham, Gabrielle Morton, Ronnie Curtis
