she was letting on. >> at this point, i told her -- belief or not. >> so you are not done with danielle dreherirak, left daniel to be at the hospital to be with sam's family. it was up to daniel to reveal the identity of the shooter and explain the sorted details of how she was connected to him. >> she said, i need you to sit down i have something to tell you. and the hairs on the back of my neck stood up. >> first, cindy learns and mcdaniel were getting a divorce. then the baton yell and sam were having affairs. most shocking of all, it was danielle's lover who shot sam. >> did i just hear what i just heard? >> for adults and snared by lies and deceit. one clinging to life. but this tangled story was about to get a whole lot more twisted. >> coming up -- >> danielle was just totally obsessed with what sam was doing. which went beyond anything that i've seen before in investigations. >> when dateline continues with a potent blend of nutrients and emerge your best every day with emergen-c nexgard is the flea and tick protection that's #1 with vets. your vet trusts it for her patients... ...and