Melissa George (Sam Hunter (8 episodes, 2012))
Adam Rayner (Aidan Marsh (8 episodes, 2012))
Morven Christie (Zoe Morgan (8 episodes, 2012))
Adewale Akinnuoye-Agbaje (Deacon Crane (8 episodes, 2012))
Stephen Dillane (Rupert Keel (8 episodes, 2012))
Patrick Malahide (Jack Turner (8 episodes, 2012))
Stephen Campbell Moore (Stephen Turner (8 episodes, 2012))
Oscar Kennedy (Edward Turner (8 episodes, 2012))
Lex Shrapnel (Ian Fowkes (8 episodes, 2012))
Tom Beard (Bingham (8 episodes, 2012))
Maddy Griffiths (Young Sam (7 episodes, 2012))
Jane Riley (Sam's Mother (7 episodes, 2012))
Indira Varma (Natalie Thorpe)
Peter Vollebregt (Horst Goebel)
Richard Dormer (Lewis Conroy)