along came kayleigh sawyer.end. >> i just turned and, i mean, i did not hit her that hard, and i just bumped her with the patrol car. >> an accident? that's what he told his wife, isabelle, the morning he left, and what he claimed in the note he left behind in his car. >> he kind of stuck to that, i hit her with the car story for a little bit. >> you knew it wasn't true? >> we knew it wasn't true. and it was easy to get past that. >> how? remember, detective mclaughlin, former pastor, had searched lara's home the previous day and found his bible, and evidence of his apparent devotion to his church. the hook, he now could see, with this very moment. >> i was in your house, i saw the bible, i know you thumb through it a lot. i see that you've tithed for months, consecutively. >> he appealed to lara the way a pastor would, with psalm 24, clean hands and pure heart -- >> i said to you clean one hand when you wash your hands or you clean them both? well both. okay, now is the time to tell you real story, because what