On July 13, 2011, Laura Jean Ackerson of Kinston, North Carolina, went to pick up her two toddler sons. It would be the last time she was seen alive. Laura's ex, Grant Hayes - the father of her two sons - and his wife, Amanda, the mother of his newborn daughter, both pointed the finger at each other as the one guilty of murdering Laura, cutting up her body, and then transporting and disposing of the remains on the shores of Oyster Creek, Texas.

He'd been shot in the head, decapitated, and set on fire. Who could have turned on the real-estate ace with such bloodthirsty fury? Even before the remains were found, circumstantial evidence was building against Rudin's 52-year-old wife, Margaret, who stood to inherit a handsome share of her husband's fortune. Rudin's friends also suspected Margaret, and the victim had thought that his wife was trying to poison him when he was alive. Then a chilling caveat was discovered in Rudin's living trust: should he die under violent circumstances, an investigation should be conducted.

He was a captain in the U.S. Air Force. She was a psychologist in Fayetteville, North Carolina. On the surface, Marty and Michelle Theer appeared to be the perfect married couple. But no one knew of the double life Michelle was leading. Tired of spending one too many nights apart from Marty who was often away on his flight missions, Michelle turned to the Internet to meet men and relieve her loneliness. With each encounter, Michelle became more daring in her sexual escapades. But one man stood out among all the rest: former U.S. Army Staff Sergeant John Diamond.

All Diane Bertalan really knew of her new husband, John, was that he was a widower, he lavished her with gifts, and he preferred to keep his past a secret. What she didn't know was that the FBI had been watching him for years. In the fall of 2000, she found out why - it was a crime that had been haunting authorities for decades. They called it the mystery of the Lady in the Box.

By all accounts, Thomas Gilbert Jr. led a charmed life. The son of a wealthy hedge fund manager and a financier, he grew up surrounded by a loving family and all the luxury an Upper East Side childhood could provide: education at the elite Buckley School and Deerfield Academy, summers in a sprawling seaside mansion in the Hamptons. He was strikingly handsome, moving with ease through glittering social circles and following in his father's footsteps to Princeton. But Tommy always felt different, and the cracks in his façade began to show.