First broadcast 9th January 1983.<br /><br />Charity worker Susan Grant is being terrorized by a masked stalker and, whilst the police are sceptical of her story, Cowley, who knew her father, believes her.<br /><br />Gordon Jackson - George Cowley<br />Martin Shaw - Doyle<br />Lewis Collins - Bodie<br />Sheila Ruskin - Susan Grant<br />Alan MacNaughtan - Henry Laughlin (as Alan MacNaughton)<br />Rona Anderson - Mrs. Grant<br />David Neal - Bauer<br />Ian Bartholomew - Miller<br />Simon Templeman - Neville Grant<br />Timothy Block - Smith<br />Zoe Gonord - Joan<br />Barrie Cookson - Mason<br />Iain Blair - Sergeant Watson<br />Rex Robinson - Superintendent<br />Vass Anderson - Doctor<br />Aimée Delamain - Old Lady<br />Duncan Miller - Sergeant<br />Rob Heyland - P.C.<br />Arthur Nightingale - Night Porter<br />Shirley English - Lady
