From Alfred Hitchcock Wiki

Web site links for Blackmail (1929)...

Film Information

• Internet Movie Database
• Wikipedia
• The Master of Suspense
• Hitchcock - The British Years
• Screenonline - details, multimedia, etc

Reviews

• Moviegoings - blog review/commentary
• The Film Vituperatem - blog review

Other Links

• Image Journal - article by Iain Morrisson ("The Art of Murder")
• The Silent Scream - online version of Elisabeth Weis' 1982 book - Chapter 2, "First Experiments with Sound: Blackmail and Murder"