Lori Vallow Daybell murder trial underway with jury selection and emotional testimony.

Lori Vallow Daybell and her husband Chad Daybell are set to stand trial on murder, conspiracy, and grand theft charges in the deaths of her two children, 7-year-old Joshua “JJ” Vallow and Tylee Ryan. The couple is also charged in the death of Chad's late wife. Prosecutors allege that the Daybells espoused strange doomsday-focused beliefs to further their alleged plan to kill the children and Tammy Daybell, then collect life insurance money and the kids’ social security and survivor benefits. The trial is expected to last up to 12 weeks, and prosecutors announced they would seek the death penalty against both defendants.