- Country: USA
- Genres: Action, Adventure, Crime
- Release: 1926-11-27
- Director: Howard Bretherton , Walter Morosco
- Writers: Walter Morosco
- Language: None | English
- Stars: Rin Tin Tin , Helene Costello , Walter Merrill , John Patrick , Otto Matieson , George Kotsonaros , DeWitt Jennings , Carl Stockdale , Les Bates
- Runtime: 63 min
- Awards: N/A
- AKA: While London Sleeps , Wenn London schläft... (Austria) , Rin-Tin-Tin unter Verbrechern (Germany) , While London Sleeps (United States of America) , Naar London sover (Denmark) , ロンドンの丑満時 (Japan) , London réme (Hungary) , Enquanto Londres Dorme (Brazil)
- Plot: Rinty is a police-dog (and faithful companion) assigned to a young Scotland Yard police-officer who covers the Limehouse district of London. The East India dock in Limehouse is the home of the scum of the world, especially a group known as the Mediterranean Brotherhood. Scotland Yard is looking for a mysterious "ape-man" (The Monk) whose deeds of violence on behalf of the gang-leader of the Brotherhood has put all of London on guard.
- IMDB:tt0017548
While London Sleeps Cast · · · ALL
Howard Bretherton
Director
Walter Morosco
Director
Helene Costello
Dale Burke
Walter Merrill
Thomas Hallard
John Patrick
Foster
Otto Matieson
London Letter
George Kotsonaros
The Monk
DeWitt Jennings
Inspector Burke
Carl Stockdale
Stokes
Les Bates
Long Tom