In a cell in a London police station, a suspected I.R.A. bomber, Roche, has been detained for questioning. To help them in the interrogation, the London coppers have summoned Nelson, a detective from Northern Ireland's predominantly Protestant police force, the Royal Ulster Constabulary.
Unfortunately the movie Rat in the Skull is not yet available on HBO Max.
| Writing | Ron Hutchinson | Writer |
| Directing | Max Stafford-Clark | Director |
| Directing | Glyn Edwards | Director |
