- Country: USA
- Genres: N/A
- Release: 1927-01-30
- Director: Arch Heath
- Writers: Paul Fairfax Fuller , Robert Glassburn
- Language: None | English
- Stars: Cullen Landis , Muriel Kingston , Louise Du Pre , Walter P. Lewis , Tom Blake , Charles Martin , Edward Burns , Jack Bardette , Gus De Weil , Tom Poland
- Runtime: min
- Awards: N/A
- AKA: Spionen fra Fort West - Last Part 2: Naar Masken falder (Denmark) , On Guard (United Kingdom) , On Guard , On Guard (United States of America) , Spionen fra Fort West - Part 1 (Denmark)
- Plot: N/A
- IMDB:tt0018219
On Guard Cast
Arch Heath
Director
Cullen Landis
Bob Adams
Muriel Kingston
Betty Lee
Louise Du Pre
Catherine Nevens
Walter P. Lewis
James Stagg
Tom Blake
Sergeant Major Murphy
Charles Martin
Colonel King
Edward Burns
Jackson
Jack Bardette
Gus De Weil
Tom Poland