Tiadira Hernandez Castillo, 28, was last seen on July 14, 2009, in the Three Points, Arizona area while crossing the border from Mexico with a group. After walking about five to six hours through difficult terrain, she reportedly fell unconscious and the group left her behind. She has not been seen or heard from since.

At the time she disappeared she was described as a Hispanic female, 5 feet 8 inches tall, weighing 123 to 130 pounds, with black shoulder-length hair and brown eyes. A distinctive red and black marking between her breasts, said to resemble an M&M, was noted. She was wearing blue jeans, a black quarter-sleeve blouse, and black tennis shoes. The Pima County Medical Examiner’s Office filed a report on May 7, 2010, and the case remains open.

The circumstances raise hard questions about what happened after she was left unconscious in remote desert terrain. If anyone knew Tiadira, saw her that day, or has information about her whereabouts, please come forward.