Nancy Guthrie disappeared from an Arizona neighborhood that is dark at night, quiet and spread out

TUCSON, Ariz. (AP) — Nancy Guthrie’s upscale Arizona neighborhood is quiet and mostly dark at night, lit mainly by car headlights and homes spaced far apart. Long driveways, front gates and desert plants provide a buffer from the winding streets and curious eyes.

Saguaro cacti tower above the roofline of Guthrie’s Tucson-area home, and wispy trees partially block the view of the front door.

Those are the conditions that investigators are faced with as they try to piece together...