Lori Vallow Daybell's murder trial has begun in Boise, Idaho, with dozens of potential jurors being dismissed due to familiarity with the case. The prosecution alleges that Vallow and her current husband killed her two children and his first wife as part of an obsessive “doomsday” religious belief. The trial is expected to last up to 12 weeks, with a jury of 10 men and eight women hearing testimony from witnesses and reviewing evidence presented by both sides.