Guest Stars Bryony Hannah as Detective Caroline Ridge Will Brown as Checkers Tomi May as George Highsmith Jonathan Aris as Greg Owen Amelia Clarkson as Keves Papadouris John Henshaw as Detective Hough Co Starring Rosie Mellor as Young Helen's Twin Rosie Mellor as Young Helen Matthew Steer as Loren Flora Montgomery as Sylvia Jack Barton as Osterhaus Joshua Ben-Tovim as Archie Philip Joslyn as Billy the Barman Matt Butcher as Evidence Officer Keith Farquhar as Gerrit Esmé Kingdom as Sheila Hugo Robijns as Berend Adei Bundy as Scene of Crime Officer Ahmad Sakhi as Constable Terry Haywood as Dev Bill Bradshaw as Robbie
