Now Playing: Margaret Rudin spends two decades in prison, appeals for a new trial: Part 10

Now Playing: Lori Vallow's sister speaks out after J.J. Vallow, Tylee Ryan are found dead: Part 11

Now Playing: Police investigation leads to shocking discovery: Part 10

Now Playing: Investigators say Alex Cox’s phone points them to missing kids J.J. and Tylee: Part 9

Now Playing: Alex Cox dies shortly after getting married: Part 8

Now Playing: Police question Lori Vallow, Chad Daybell about kids’ whereabouts: Part 7

Now Playing: Chad Daybell's wife dies shortly after frightening encounter: Part 6

Now Playing: Ex-husband of Lori Vallow’s niece shot at while returning home: Part 5

Now Playing: Lori Vallow moves to Idaho after husband’s death: Part 4

Now Playing: Charles Vallow shot and killed by brother-in-law: Part 3

Now Playing: Trouble in Lori Vallow’s 4th marriage as she’s drawn into religious group: Part 2

Now Playing: Lori Vallow gets married in Hawaii as authorities search for missing kids: Part 1

Now Playing: J.J. Vallow’s grandparents on how his mom’s parenting changed

Now Playing: Lori Vallow’s former in-laws remember her prepping for apocalypse in Idaho

Now Playing: Lori Vallow’s friend says she became ‘superfan’ of Chad Daybell and doomsday ideology

Now Playing: Margaret Rudin is released from prison, continues fight to clear her name: Part 11

Now Playing: Margaret Rudin is found guilty, refuses multiple plea deals: Part 9

Now Playing: Margaret Rudin’s widely-televised trial begins in Las Vegas: Part 8

Now Playing: Authorities catch Margaret Rudin with an elaborate sting operation: Part 7

Now Playing: Margaret Rudin becomes a fugitive and spends nearly 2 years on the run: Part 6