London, 1944: After almost five years of conflict, London’s inhabitants are war-weary, and DI Ted Stratton is no exception. After a long night rescuing a neighbour from the rubble of her bombed home, he’s called to investigate the suspicious death of a doctor. As he digs deeper, Stratton begins to suspect that something more sinister is going on and that a faceless shadow is stalking the hospital corridors. Meanwhile, Stratton’s wife Jenny helps to look after the bombed-out woman. When she claims that her soldier hsuband is an imposter, Jenny thinks she must be in shock, but the truth is far stranger and more dangerous…