Guest Stars Katia Winter as Marina Hartner Anastasia Hille as Ginny Harris Cara Horgan as Alice Wishart Tom Mison as Dorian Crane Olly Alexander as Hayden Wishart Selina Cadell as Professor Rutherford Adrian Lukis as Jem Wishart Claire Brown as Kelly Belford Farzana Dua Elahe as Leyla Adan Art Malik as Professor Hamid Jassim Louise Dylan as Melanie Harding Mike Burnside as Pub Landlord Simon Kerr as Canadian Tourist Uncredited Colin Dexter as Man Leaving The Randolph