Opening statements in Lori Vallow Daybell's trial in Arizona began Monday. She is charged in the death of her fourth husband, Charles Vallow.

Lori Vallow Daybell is already serving life sentences in Idaho for murdering her two youngest children and conspiring to kill her lover's wife

Opening statements were delivered Monday in an Arizona case against Lori Daybell, who was charged with conspiracy to commit first-degree murder in the death of Charles Vallow, her fourth husband.