The Flying Squad

The Flying Squad is a 1932 British crime film directed by F.W. Kraemer and starring Harold Huth, Carol Goodner, Henry Wilcoxon and Edward Chapman. It was based on a 1928 novel by Edgar Wallace, which was also filmed in 1929 and 1940. The screenplay was written by Bryan Edgar Wallace, based on his father's novel. The officers of the Flying Squad attempt to track down a drug-smuggling gang.

Synopsis from Wikipedia, CC BY-SA 4.0. Everything below written here.