Magnum Opus (2) Before the fourth murder takes place, the team must uncover the guilty secret that their victims share in order to learn the identity of both the killer and the potential victim. Details Casts Title Magnum Opus (2) Genres Crime Drama Mystery Release Date 2015-10-27 Episode Runtime 01 Hours 30 Minutes Season Number 9 Episode Number 4 Production Companies ITV Productions, ITV Studios Kevin Whately Detective Inspector Robe? Laurence Fox Detective Sergeant James? Clare Holman Dr. Laura Hobson Rebecca Front Chief Superintendent Jea? Alex Macqueen Dr. Julius Fisher