Chad Daybell's Troubling Past and Lori Vallow's DNA Match in Trial

Chad Daybell predicted his wife Tammy's death eight months before he and Lori Vallow allegedly murdered her. The doomsday couple is accused of killing Tammy and Vallow's children JJ and Tylee. During Vallow's murder trial, a friend of Tammy's testified that Daybell claimed he had a vision of Tammy's death. The couple is also accused of referring to the children as "zombies" and planning to use life insurance money from Tammy's death. Vallow denies two counts of first-degree murder and three counts of conspiracy, while Daybell is being tried separately.