With DCI Conroy confident in the case against Greg, surveillance is pulled from Zoe’s flat. Martin follows his instincts and goes on a journey to investigate Carl Tuckman’s murky past in Westport, seeking out a retired detective, Donald Vernon,who sheds new light on the case.

Cast: Noel Clarke, Alexandra Roach, Kíla Lord Cassidy, Amy Wren, Marcus Garvey, Dominic Allburn, Catherine Tyldesley, Sia Kiwa, Hubert Hanowicz, Phill Langhorne, Erin Shanagher, Sarah Niles, Shannon Murray, Phil Davis, Fehinti Balogun