Guest Stars Gregory Piper as Ryan Pilkington Aiysha Hart as DS Sam Railston Polly Walker as Gill Biggeloe Tomi May as Miroslav Minkowicz Tony Pitts as DCS Lester Hargreaves Andrea Irvine as Roisin Hastings Rochenda Sandall as Lisa McQueen Taj Atwal as PC Tatleen Sohota Patrick Fitzsymons as DCI Mark Moffatt Richard Pepple as PS Kyle Ferringham Natalia Kostrzewa as Interpreter Lena Kowalska Richard Sutton as PC Kieran Bloom Orla Mullan as Detective Caroline Lumiere Koziol as Mariana Niemec