Nita Mary Mayo, a 64-year-old licensed practical nurse with a distinctive British accent, was last seen the morning of August 8, 2005, leaving her Hawthorne, Nevada home for a solo day trip to Sonora, California. She departed around 11:00 a.m. in her 1997 silver Mercury Sable station wagon, marked by a Marine sticker, after breakfast with a friend. She planned to return that evening for work at Mt. Grant General Hospital Clinic but never showed up for her shift.

Two days later the car was found locked at Donnell Vista on Highway 108. Her purse, wallet, keys, cell phone and souvenirs from the Strawberry General Store were inside; only her camera and prescription sunglasses were missing. The overlook drops to a river canyon about a thousand feet below, and an extensive search of the rugged terrain with dogs, helicopters and rappelling teams turned up no sign of her. Jewel Jeanne Rice, once sought for questioning, was later located and is no longer considered a person of interest. Nita was declared legally dead in 2013, but the disappearance remains unresolved.

If anyone remembers seeing Nita, her silver Mercury Sable, or anything unusual at Donnell Vista on or after August 8, 2005, please come forward with information.