Guest Stars Sam Stockman as DC Emerson Kent Claire Rushbrook as Dr. Caroline Llewellyn Ben Bishop as DC Finley Mansell George Rossi as DC John McCormack Alex Jennings as Commander Anderson Christopher Fulford as DC Leo Fitzgerald Peter Serafinowicz as DCI Torbin Cazenove Steve Nicolson as Jack Cheshire Mark Flitton as Barman Sol Cross Daniel Percival as DS Christopher Cedra Andrew Tiernan as Steven Dukes Andy Beckwith as Grave Maurice Regular Nila Aalia as Dr. Wilkes Craig Parkinson as Builder Irene Bradshaw as Sandra Cobb Jason Maza as Dan Street Dimitri Andreas as Mr. Alie Trevor Martin as Slasher Daneford Tommy Carey as Paul Gedding