1944. After almost five years of conflict, London's inhabitants are war weary - and DI Ted Stratton is no exception.

After a long night digging a bomb victim out of rubble, he's called to investigate a doctor's death. The circumstances seem suspicious: an affair turned sour? Revenge? As Stratton digs deeper, he begins to suspect something more sinister is going on - that a faceless shadow is stalking the hospital corridors...

Meanwhile, Ted's wife Jenny meets a bombed-out woman claiming her soldier husband is an impostor. Jenny thinks she must be in shock, but the truth is stranger and far more dangerous...