Guest Stars Philippa Urquhart as Susan Oliver Ford Davies as Dept. Assist. Commissioner Gradley Mike Savage as Sgt. Hissink Pete Postlethwaite as Jack Frost Terence Budd as P.C. Lyall Ian Brimble as Reg Grey Carole Bollard as W.P.C. Wilkins Patrick Moore as Garfield Jill Simcox as Miss Russell Stephen Lawrence as Det. Sgt. Hunt Judith Bruce as Babs Raymond Brody as Franco John Golightly as Det. Insp. Howitt David Gillies as P.C. Thomas Jean Leppard as Jean Grey Tommy Wright as Straub Uncredited Norman Hartley as Commissionaire
