Trevor has succeeded in finding the music he's been looking for and Jill's campaign is reaching fever pitch. But who is the mysterious supergrass and the woman 'with a past'? Will the truth ever be revealed to Det Sgt Hobson?

Trevor is at the apex of an emotional triangle, Sergeant Hobson is in trouble, and Jill is taken out to dinner.

Jill and Trevor have an emotional crisis, Sergeant Hobson has a policing crisis, and Big Al has a storage crisis. But the question on everybody's mind is: 'Who is McAllister?'.