Secrets of Scotland Yard

Cast

• Edgar Barrier as John Usher / Robert Usher
• Stephanie Bachelor as Sudan Ainger
• C. Aubrey Smith as Sir Christopher Pelt
• Lionel Atwill as Waterlow
• Henry Stephenson as Sir Reginald Meade
• John Abbott as Mortimer Cope
• Walter Kingsford as Roylott Bevan
• Martin Kosleck as Josef
• Forrester Harvey as Alfred Morgan
• Frederick Worlock as Mason
• Matthew Boulton as Colonel Hedley
• Bobby Cooper as David Usher

  Critical reception

• Silentcomedymafia.com noted that director "Blair keeps up the pace and suspense perfectly well, giving the film a relatively expensive look when you know full well Herbert Yates is pinching every penny."
• In The Star-spangled Screen: The American World War II Film, Bernard F. Dick called the film "first-rate espionage and one of the studios classier efforts...Another instance of a minor film that shows considerably more intelligence than many major ones. It is the only film of the period to explain the techniques of Cryptoanalysis, particularly how page numbers of a book can provide the key to a code."