Guest Stars Phoebe McKellar as Tilly Gardiner Alexander Walker as Joe Turner Nathalie Morris as Emma Ryder Phil Brown as Mark 'Haggis' McCrae 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 Maëlys-Lily Foote as Lily Bennett Hester Ullyart as Rosa Burns Matthew Chamberlain as DI David Preston Oban Hansen as David Bennett 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
