Mitchell is a rich American businessman whose son is kidnapped in England. Naturally, there's a huge ransom demand, but Scotland Yard tells Mitchell to butt out.
Unfortunately the movie The Unstoppable Man is not yet available on HBO Max.
| Directing | Terry Bishop | Director |
| Writing | Terry Bishop | Writer |
| Writing | Alun Falconer | Writer |
| Writing | Alun Falconer | Novel |
| Writing | Paddy Manning | Writer |
| Sound | Bill McGuffie | Music |
| Editing | Antony Gibbs | Editor |
| Production | John Pellatt | Producer |
| Camera | Arthur Grant | Director of Photography |
