Londen, 1929. Frank Webber, een zeer drukke Scotland Yard detective, lijkt meer geïnteresseerd te zijn in zijn werk dan in Alice White, zijn vriendin. Alice voelt zich genegeerd en gaat uit met een elegante en welgemanierde kunstenaar die haar uitnodigt in zijn chique appartement.
Nee, helaas is Blackmail nog niet beschikbaar op Netflix in Nederland.
| Writing | Alfred Hitchcock | Screenplay |
| Camera | Jack E. Cox | Director of Photography |
| Editing | Emile de Ruelle | Editor |
| Directing | Alfred Hitchcock | Director |
| Art | C. Wilfred Arnold | Art Direction |
| Sound | Dallas Bower | Sound Recordist |
| Sound | Hubert Bath | Original Music Composer |
| Art | Norman G. Arnold | Art Direction |
| Sound | Harry Miller | Sound Editor |
| Sound | Harold V. King | Sound |
| Production | John Maxwell | Producer |
| Camera | Derick Williams | Assistant Camera |
| Camera | Ronald Neame | Assistant Camera |
| Camera | Michael Powell | Assistant Camera |
| Directing | Frank Mills | Assistant Director |
| Writing | Michael Powell | Writer |
| Writing | Charles Bennett | Theatre Play |
| Sound | Reginald Connelly | Original Music Composer |
| Sound | Hubert Bath | Music Arranger |
| Sound | John Reynders | Conductor |
| Sound | Jimmy Campbell | Original Music Composer |
| Writing | Benn W. Levy | Dialogue |
| Sound | Harry Stafford | Music Arranger |
