Guest Stars Sam Stockman as DC Emerson Kent Claire Rushbrook as Dr. Caroline Llewellyn George Rossi as DC John McCormack Alex Jennings as Commander Anderson Christopher Fulford as DC Leo Fitzgerald Johnny Harris as DC Sanders Paul Hickey as Dr. Cohen Sophie Stanton as Mary Bousfield Jane Riley as Sarah Smith Sally Leonard as Frances Coles Dennis Banks as Jim Green Dutch Dore-Boize as Rob Lees