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