wilkie. january 1st -- shelby's new years resolution to leave michael, taking baby sydney, leaves to a physical scratches on wilkie's face. the luminol test indicates what happened next -- michael wilkie savagely beat and killed his wife -- while baby sydney was in the next room. as her family tries to reach her later that day, it is michael texting those terse replies on her phone. that night he drags his dead wife through the house out to the backyard where he incinerates her body in that suspicious bonfire. >> clearly to burn a body where there's little to nothing left, it would have to be a fire of impressive size. >> reporter: to cover up the crime he scrubs the house spotless and later drives a barrel of charred remains to the back of his parent's property. but he still has to explain shelby's disappearance so he concocts the runaway theory by driving shelby's car to the airport late sunday night -- that's him in the security cam footage. >> you see a figure right here. >> reporter: to mask his role in shelby's vanishing, wilkie then leaves those concerned voice mails at her office on mon