Christopher Chataway
В роли: Self - Narrator (голос)

John Glaister
В роли: Self - Professor Emiritus of Forensic Medicine and Public Health, University of Glasgow (как Prof. John Glaister)

Cyril 'Tanky' Holdaway
В роли: Self - Head of Hampshire CID (как Det. Chief Supt. Holdaway)

John McCafferty
В роли: Self - Head of Ballistics Department, Scotland Yard

Prof. Keith Simpson
В роли: Self - Professor of Forensic Medicine, Guy's Hospital (как Prof. Keith Simpson)