William A. Trainor was 35 when he was last seen in Grandview, Jackson County, Missouri, on November 3, 1999. He is described as a Caucasian male, six feet tall, about 160 pounds, with brown hair and brown eyes. Few details about his clothing, state of mind, or the circumstances of that day have been released, and the case has generated very few leads.

Investigators note he sometimes used aliases including A.T. Turner and William Turner, and his last name may appear as Trainer in some records. The Grandview Police Department has kept the case open, but there have been no public breakthroughs to resolve what happened after that November day.

If anyone knew William, lived in Grandview in 1999, or has information about the aliases or possible sightings, please share what is known.