An average Los Angeles citizen witnesses a gang murder when he stops to use a telephone. When he presents himself to the LAPD as the only person willing to identify the culprits, he opens himself up to a campaign of intimidation from the gang involved.
Unfortunately the movie Key Witness is not yet available on HBO Max.
| Directing | Phil Karlson | Director |
| Writing | Alfred Brenner | Screenplay |
| Writing | Sidney Michaels | Screenplay |
| Writing | Frank Kane | Novel |
