Lori Vallow Daybell on trial for killing her children and conspiring to kill husband's ex-wife.
Lori Vallow, a member of a fringe "doomsday" religious group, is on trial for the murder of her two children, as well as other crimes, alongside her husband Chad Daybell. The couple's alleged belief in an extremist, end-times ideology led to a multi-state investigation and several suspicious deaths. The trial begins with opening statements on Monday.