Unknown to everyone but his shady Middle Eastern bosses, watchmaker Hawkins is actually a professional hired assassin with a predilection for killing his targets with bombs. After disposing of a dictator and millionaire, Hawkins is assigned to kill a politician who is heading to a remote hotel, The Green Man, for a secret tryst with his secretary. There, however, Hawkins' plot is discovered by vacuum salesman William Blake, who determines to stop him.
Unfortunately the movie The Green Man is not yet available on HBO Max.
| Directing | Robert Day | Director |
| Production | Frank Launder | Producer |
| Production | Sidney Gilliat | Producer |
| Sound | John Glen | Sound Editor |
| Writing | Frank Launder | Theatre Play |
| Writing | Sidney Gilliat | Theatre Play |
| Directing | Basil Dearden | Director |
| Camera | Gerald Gibbs | Director of Photography |
| Art | Wilfred Shingleton | Art Direction |
| Editing | Bernard Gribble | Editor |
| Production | John Pellatt | Unit Manager |
| Directing | Douglas Hermes | Assistant Director |
| Camera | Alan Hume | Camera Operator |
| Sound | John Cox | Sound Supervisor |
| Sound | Buster Ambler | Sound Recordist |
| Sound | Red Law | Sound Recordist |
| Costume & Make-Up | Anna Duse | Costume Designer |
| Directing | Olga Brook | Continuity |
| Costume & Make-Up | Trevor Crole-Rees | Makeup Artist |
| Costume & Make-Up | Bill Griffiths | Hairdresser |
| Crew | Wally Veevers | Special Effects |
| Crew | George Samuels | Special Effects |
| Writing | Sidney Gilliat | Screenplay |
| Writing | Frank Launder | Screenplay |
| Sound | Cedric Thorpe Davie | Original Music Composer |
| Sound | Muir Mathieson | Conductor |
| Production | Leslie Gilliat | Associate Producer |
| Sound | Ken Ritchie | Boom Operator |
| Crew | Basil Mannin | Scenic Artist |
