District Nurse Mary Grey saves the life of young architect, Anthony West, when he is involved a car wreck, only for West to tell her it was no accident. Someone tried to kill him. Mary is skeptical at first, but when West dies, she's determined to investigate the matter. More blood is spilled, and Mary becomes embroiled in a tangled web of intrigue and murder as she joins forces with exiled Jewish German detective Franz Shaefer. And on top of everything else, Mary finds herself dangerously attracted to Anthony's beautiful and unattainable sister Harriet.