Vallow Daybell, who was already convicted in Idaho of killing her two youngest children and conspiring to murder a romantic rival, has pleaded not guilty to a charge of conspiring with another brother, Alex Cox, to murder Charles Vallow at her home in Chandler, a Phoenix suburb.

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

Day three of the Lori Daybell murder conspiracy trial began with a cross-examination of retired homicide detective, Daniel Coons, on the stand.