Guest Stars Daniel Maslany as Detective Llewellyn Watts Kristian Bruun as Constable Augustus "Gus" Jackson Mouna Traoré as Rebecca James Alex Paxton-Beesley as Winifred "Freddie" Pink Jordan Johnson-Hinds as Nate Desmond Greta Onieogou as Themis Elizabeth Whitmere as Clarissa Watts Natasha Greenblatt as Artemis Co Starring Sophie Goulet as Marilyn Clark Jonathan Robbins as Norman Bruce Stephen Guy-McGrath as Hector Coleman