Guest Stars Phoebe McKellar as Tilly Gardiner Alexander Walker as Joe Turner Phil Brown as Mark 'Haggis' McCrae Nathalie Morris as Emma Ryder Michelle Langstone as Charlotte McCrae Jim Moriarty as Maaka Richardson Ronan Thompson as Walter Schmitt Aysu Shahi as Evelyn McDonald Arlo Green as Orlando Smythe Hester Ullyart as Rosa Burns Maëlys-Lily Foote as Lily Bennett Oban Hansen as David Bennett Matthew Chamberlain as DI David Preston Ruby Burke as Teen Girl Luka Treat as Teen Boy Gemma Weston as Dead Kayaker Jeremy Hill as Tattoo Artist Andrew Kelly as Dodgy Flatmate
