We meet Daniel Milton, a respected surgeon who while mourning the death of his wife appears to have got himself involved in a very strange enterprise...
After Anna escapes from the bunker, Daniel desperately races to track her down and explain himself before she reveals his secret.
Daniel and Lee attempt to deal with a particularly difficult - and dangerous - patient, while cops and criminals alike begin their hunt for Jamie and the robbery money
Daniel and Anna work closely and intensely to search for a scientific breakthrough before it is too late.
Daniel descends into the murky world of black market medicine with catastrophic consequences.
Daniel is spiralling out of control as he struggles to deal with his actions, and relationships in the bunker begin to unravel.
Mark Strong
Daniel Milton
Daniel Mays
Lee Simmons
Carice van Houten
Anna Willems
Rhys Ifans
Gubby
Catherine McCormack
Beth Milton