The Great Office Mystery
- Xyoo: 1928
- Ncig Teb Chaws: United States of America
- Genre: Crime, Drama
- Studio: British Filmcraft Productions
- Cov ntsiab lus: sexton blake
- Tus Thawj Coj: George A. Cooper
- Pov Pob Tseg: Langhorn Burton, Mickey Brantford, Fred Raynham, Gabrielle Morton, Ronnie Curtis
