Special Guest Stars Honor Blackman as Lillian Stanhope Richard Pearson as Diver, the Pathologist John Fraser as Det. Sgt. O'Keefe Guest Stars Richard Basehart as Nicholas Frame John Williams as Sir Roger Haversham Wilfrid Hyde-White as Tanner, the Butler Bernard Fox as Det. Chief Supt. William Durk Co Starring John Orchard as Country Constable Charlie Ronald Long as Mr. Jones Gerald S. Peters as Inspector Smythe Peter Church as Constable Sharon Johansen as Miss Dudley Hedley Mattingly as Customs Man Walker Edmiston as Gardener Arthur Malet as Fenwick Harvey Jason as The Director Uncredited Don Knight voices Stagehand outside dressing room Dick Cherney as Airport Security John Wilder as Man in Pub
