In 1995, Tina Sandoval was a sharp young college graduate who had just landed her dream job as a nurse. She had a new apartment, lots of friends and a loving family - all the makings of a promising future. One lingering problem plagued her like the cancer she was helping treat at the hospital - her husband, John Sandoval, who called himself "The Shadow," stalking and following women almost nightly for years. Her divorce couldn't come fast enough. A final meeting with him to settle an IRS debt would be the last time anyone would see Tina. Police knew he killed her. But they had nothing - no crime scene, no confession and no body. They didn't know how he did it, and he would never confess or talk, but a team of prosecutors and investigators set out fourteen years later to prove the only possible cause of her disappearance was murder.