Marriage to a tall, handsome and wealthy man is not always one of bliss and happiness. And how often are there deep feelings for a best friend who had never been a lover? The death of Lucy Godstow's best friend, Vanessa, on the eve of Lucy's marriage to Guy Weaver, was a big enough blow; but then Vanessa's elderly aunt Joan is found brutally murdered. Lucy and Vanessa's brother Tom have different reasons for thinking all is not as it seems, but new husband Guy is intolerably jealous of Lucy's ongoing and innocent meetings with Tom which have to be arranged in clandestine fashion. As Guy's rages and mental and physical brutality increase, the police become increasingly suspicious and follow Guy and Lucy to their home in Spain. But are they too late to save another death, and can Tom, who worships the ground Lucy walks upon, come riding to the rescue like a valiant knight of old?