Gale Ralph Keilman, 56, disappeared from the Peabody Health and Rehabilitation Center in Peabody, Kansas, on the night of August 17, 2015. Keilman, who was mute and communicated by writing and sign language, climbed a tall wooden fence around the facility’s patio and left the property at about 10:30 p.m. Staff and law enforcement searched immediately but never located him.

Keilman had a complex medical history: severe schizophrenia after a high-voltage electrocution in 1980 and partial paralysis and loss of speech from a self-inflicted gunshot wound in 1983. Searches covered more than 200 square miles around Peabody with no trace found. His family continued to hope for his return while fearing the worst.

Anyone with information about Gale’s disappearance is asked to contact the Peabody Police Department.