Guest Stars Ivanno Jeremiah as Inspector Barnes Jack Bandeira as Quill Kipps Rhianna Dorris as Kat Godwin Bronwyn James as Sergeant Wade Louise Brealey as Pamela Joplin Ben Crompton as Julius Winkman Hayley Konadu as Flo Bones Jeff Rawle as Sebastian Saunders Alice Lowe as Adelaide Winkman Lucy Briers as Mrs Harris Jethro Skinner as Jack Carver Conall Turner as Leopold Winkman