Myrna Luz Bailon Isidor was 39 when she was last seen on June 26, 2010, near the small border community of Lukeville in Pima County, Arizona. She was in the process of crossing the U.S./Mexico border that day and her whereabouts have been unknown since.

Myrna is described as Hispanic or Latino, with brown hair and brown eyes. Her height was estimated between 5 feet 10 inches and 6 feet 3 inches and her weight between 100 and 150 pounds. Distinguishing marks include a very visible vaccine scar on her left arm and a small scar just below her left knee. She was wearing a pink shirt, blue jeans and brown Puma tennis shoes, and carried an orange plastic bag with a bottle of water. She also wore a ring showing the Virgen de Guadalupe and 14-karat gold hoop earrings.

The Pima County Office of the Medical Examiner took the report of her disappearance, but no further details about her fate are provided. If anyone saw Myrna around Lukeville on or after June 26, 2010, or has information about her crossing that day, please come forward.