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 Robert Hands as Eric Gidby Charlotte Bradley as Mrs Trellis Ross Boatman as Mac Honeydew Terenia Edwards as Marilyn Gidby Sargon Yelda as Dr Larry Humbolt Katie Faye as Christine Chase Matthew Cottle as Jeff Slayton Michael Parkhouse as TV Anchor Alice Orr-Ewing as Natalie Wingqvist Mary Stockley as Hildegard Slayton Sasha Willoughby as Flora Humbolt Gabriel Payne as Matthew Humbolt
