Casablanca, 1943: a viper's nest of double agents and spies where OSS Officer Kurt Heinz finds his skill in covert operations pushed to the limit. Allied success in North Africa and the fate of the First Allied Conference—perhaps the outcome of the war—hang on Kurt's next mission. The nature of his work makes relationships impossible. Nonetheless, he is increasingly torn between duty and the beautiful girl who desperately needs his protection and help. Sarah Barrett, U.S. Army R.N., is finished with wartime romance. Determined to protect her recently broken heart, she throws all of her time and energy into caring for her patients, but when she is given a coded message by a mysterious dying civilian, she is sucked into a vortex of danger and intrigue that threatens her very survival. The one person who can help Sarah is Kurt, a man with too many secrets to be trusted.