Dil Bryant married Laura, then headed off to South America on a job for an oil company. He received a letter from his friend Jill saying that Laura was in trouble. He rushed home to find his wife dead. The police and FBI were involved, but Dill did some investigation of his own. He soon discovered that he hadn't known much about Laura. She was really a Russian sleeper spy who had stolen a list of all the sleeper agents in the U.S. There was a lot of chasing and killing and all sorts of stuff, but in the end, Dil and Jill end up in love and the bad guys all get their just due.