Guest Stars Anthony Calf as Deputy Assistant Commissioner Robert Strickland Susan Jameson as Esther Lane Sheila Hancock as Grace Pullman June Whitfield as Pru Sanders Adrian Rawlins as Daniel Newley Geoffrey Bayldon as Leonard Case Steve Speirs as Dougie Taylor Norman Eshley as Billy Pierce Belinda Sinclair as Fiona Fielding Chris Casserly as Simon Hall Gwyneth Strong as Kim Newley Mark Tandy as Colin Meadows Sophie Holden as Kelly Meadows