Holliday Grainger as Rachel Carey
Ron Perlman as Frank Napier
Lia Williams as DSU Gemma Garland
Ben Miles as Commander Danny Hart
Callum Turner as Shaun Emery
Paapa Essiedu as Issac Turner
Ralph Ineson as DCI Alec Boyd
Cavan Clerkin as DS Patrick Flynn
Laura Haddock as Hannah Roberts
Barry Ward as Charlie Hall
Indira Varma as Khadija Khan
Ginny Holder as DS Nadia Latif
Nigel Lindsay as DSI Tom Kendricks
Charlie Murphy as Simone
Andy Nyman as Rowan Gill
Sharon Rooney as Becky