Guest Stars Anthony Calf as Deputy Assistant Commissioner Robert Strickland Susan Jameson as Esther Lane Natalie Forbes as Jayne Carolyn Allen as Carole Heather James as Alison David Troughton as Ricky Hanson Noma Dumezweni as Sophie Oyekambi Marian McLoughlin as Shirley White Lynda Bellingham as DS Karen Hardwick John Sessions as Dr. Finlay McKenzie MEREDITH BRAUN as Nyreen Mark Womack as Ray Monkton Nick Haverson as Norman Simon Dutton as Duncan Freedman