Robert Garrett Stewart, 25, was last seen in Billings, Montana, during the early morning of October 4, 2013. He was with acquaintances near Jackson Street and State Avenue in the southern part of the city; the weather that day was reported as snowy and rainy. Stewart lived on the Crow Reservation in Wyola and was a father of two. Family called him Baby Garrett and he also used his middle name, Garrett.

When he disappeared he had recently shaved his head, wore a slight mustache and goatee, and was not wearing his corrective glasses. His clothing was a brown-front Western Sugar baseball cap with a white mesh back, a gray zip-up sweatshirt with grease stains on the front pocket area, and faded blue Wrangler jeans. His father reported him missing on October 10, 2013.

Investigators have said Stewart may have been disoriented and that foul play or being taken against his will were possibilities. The FBI joined the investigation and offered a reward of up to $10,000; law enforcement has made public appeals and put up banners and signs on the Crow Reservation. The case remains unsolved and the trail has grown cold. If anyone knew Robert, saw him in Billings that night, or has information that could help, please come forward.