S9 E4: ‘Til The Day I Die

David’s TV documentary about Christine comes out in the spring of 2012, publicly revealing details of the case for the first time along with key interviews including a face-to-face with Anthony Ringel. In the aftermath, police launch an undercover operation on Ringel. David and Mary Ann's work proves key and Ringel is re-arrested. Will Ringel finally go to trial and Mary Ann learn the truth?