Yorkshire policeman Ron Craven sees his daughter Emma gunned down in front of him. His grief leads him to investigate and he learns of her activities as a radical environmental activist.
Craven's investigation leads him to Emma's boyfriend and to American CIA agent Darius Jedburgh as it becomes apparent that Emma's activities were far from innocent-- and known to the government.
The police close in on their prime suspect for Emma's murder but Craven, now aware of her activities, is convinced that his colleagues are on the wrong track.
Craven confronts Emma's killer but is shot. Suffering from an apparent breakdown, he becomes determined to gain access to Northmoor nuclear plant.
Craven and Jedburgh follow the GAIA's route into Northmoor nuclear plant, but others are determined to stop them.
Jedburgh heads to Scotland with the stolen plutonium while Craven awaits the inevitable end.
A moment's savagery on a rainswept night presents detective Ronald Craven with his most harrowing case. The search for the killer of his daughter Emma becomes a heart-stopping journey to the heart of the nuclear secret state.
Featuring contributions from writer, cast and production team
The TV review programme looks at Edge of Darkness.
Bob Peck interviewed on the BBC Breakfast show.
Featuring interviews with producer Michael Wearing and actor Bob Peck.
Coverage of the 1986 BAFTA awards, including interviews with Bob Peck and Joe Don Baker.
An unused alternative ending to Episode 6.
