Dennis Nilsen: Gràdh a' Bhàis?

John Morrison

Himself - Presenter / Narrator

Peter Jay

Himself - DCI, Metropolitan Police, 1983

Iain MacDhùghaill

Himself - Criminal Defence Lawyer

Archie MacLullich

Himself - Consultant Psychologist

Pàdraig MacAmhlaigh

Himself - Journalist

Julian Booth