An attractive young woman is found dead on a bomb site in the early hours of the morning. At first glance, she is just another casualty of the previous night's air raid, but when the post-mortem shows signs of strangling, DI Jago is called on to investigate. The dead woman is smartly dressed but carries no identity card. However, a local engineering company reports a member of staff has failed to appear at work that morning and the body is quickly identified as that of Miss Mary Watkins.
DI Jago's initial interviews yield little fruit, no one can think of a reason why Mary would be murdered, but as the investigation continues DI Jago starts to uncover a trail of deception and betrayal.