Guest Stars Caroline O'Neill as Win Thursday Abigail Thaw as Dorothea Frazil Sara Vickers as Joan Thursday Simon Harrison as Ronnie Box Richard Riddell as DS Alan Jago Alison Newman as Viv Wall Blake Ritson as Gabriel Van Horne Sophie Winkleman as Isobel Humbolt Benjamin Wainwright as Professor Adam Drake Oliver Chris as Dr Elliot Wingqvist Sasha Willoughby as Flora Humbolt Katie Faye as Christine Chase Ross Boatman as Mac Honeydew Sargon Yelda as Dr Larry Humbolt Alice Orr-Ewing as Natalie Wingqvist Mary Stockley as Hildegard Slayton Gabriel Payne as Matthew Humbolt Terenia Edwards as Marilyn Gidby Charlotte Bradley as Mrs Trellis Robert Hands as Eric Gidby Michael Parkhouse as TV Anchor Matthew Cottle as Jeff Slayton
