Blackmailed offers interactive tools beyond traditional movie databases:
A thriller about witnesses to a murder forming a pact of silence while dealing with their own secrets and guilt.
Crime, Drama, Thriller · 4.3/10 · 85 min · 1951
A blackmailer is murdered, and those who witnessed the scene agree to keep quiet; the complication is that the scene is also witnessed by a young artist, a victim of blackmail as well. (BFI Website)