Guest Stars Catherine Tyldesley as Kate Tuckman Erin Shanagher as Fiona Baker Dominic Allburn as Carl Tuckman Fehinti Balogun as Greg Sullivan Phil Davis as DI Liam Cox Amy Wren as Gemma Hillman Sarah Niles as DCI Jill Conroy Bronagh Waugh as DC Stella Beckett Marcus Garvey as DC Roly Dalton Shannon Murray as Hayley Jones Karen Henthorn as Janice Baines Andrew Hawley as Tim Kíla Lord Cassidy as Caitlin Sterling Hubert Hanowicz as Pavel Ludic Lucy Chambers as Chloe Tuckman Carlyss Peer as Sarah Young Sebastian Peters as Max Young Uncredited Shane Senior as Vic