Richard Shaw thinks he's been blessed when he and his new bride Beryl survive a car smash. Both make rapid recoveries from their injuries, both have apparently fully recovered. But Beryl is strangely changed. As the doctor tells Richard: "As far as we can tell medically, she is normal again, except for one thing—the way she looks at you. I don't think I have ever seen such a strange light in the eyes of a woman before!" Despite Beryl's odd, even sinister, new mental outlook, Richard buys an isolated house in the country—at his wife's insistence—and tries to pursue a normal married life. And then the murders begin....