Nancy Guthrie case update: Can the case be solved without a body? Expert weighs in

A veteran prosecutor suggests the Nancy Guthrie case can move forward even without a body. Authorities are investigating the disappearance of the 84-year-old from her Arizona home. The Pima County Sheriff highlighted the reliance on lab work and the careful process of ensuring the right person is identified. Investigators continue to gather evidence to determine responsibility for her vanishing.