Guest Stars Anna Maxwell Martin as Janine Joe Sims as Vincent Tabak Ben Caplan as Charles Chapman Shaun Parkes as Paul Okebu Colin Mace as Peter Stanley Nathalie Armin as Melissa Chapman Matthew Barker as Greg Reardon Carla Turner as Joanna Yeates Marcus May as Charles and Melissa's Son Anna Gorham as Charles and Melissa's Daughter Jennifer Higham as Tanja Jonathan Newth as Geoffrey Flip Webster as Susan Andrew Hilton as Richard Charlotte Melia as Police Officer Sam Ellis as Police Officer Darren Seed as Police Officer Anna-Marie Paraskeva as Police Officer Gemma Reynolds as Police Officer Marc Geoffrey as Custody Officer Joe Coen as DC Paul Batty Rachael Spence as Police Officer James Garnon as Reporter Ben Frimstone as Postman George Potts as Police Doctor Catherine Kanter as Cousin James Lailey as DC Paul Connor Adam Sopp as Police Officer Stuart McLoughlin as Police Officer Howard Coggins as Custody Officer