As thousands of Brits are fighting on the Front Line, a new breed of women emerges to hold the Home Front together. Fiercely independent and fiery-spirited, these women are a raucous group of munition workers. One group of "canaries", so-called because of their chemically-stained yellow faces ...
The first message sent to Tom Thorne's phone was just a picture - the blurred image of a man's face, but Thorne had seen enough dead bodies to know that the man was no longer alive. But who was he? Who sent the photograph? And why? While the technical experts attempt to trace the sender, Thorne searches the bulletins for a reported death that matches the photograph. Then another picture arrives.