When a real estate developer is shot to death, his wife becomes the prime suspect. Police have a wealth of evidence against her, but it's circumstantial. The case will turn on a .25 caliber bullet fired 20 years ago from the now-missing murder weapon.

To learn more about how HLN protects listener privacy, visit cnn.com/privacy

Learn more about your ad choices. Visit podcastchoices.com/adchoices