World War

A female codebreaker in 1943 London intercepts a German transmission that predicts her own death—and must decode who among her colleagues sent it.

In 1916, ambulance driver Millicent Passmore carries the wounded down from the Somme and writes every name she transports into a private notebook. When a dead man's name walks into her clearing station alive, she must trace a trade in stolen identities before it buries the truth, and her.