Durham Regional Police say they have found a shoe, they believe belongs to Jeffrey Boucher.
The Bowmanville high school teacher was reported missing on January 13th, when he left home, reportedly for a jog.
He was never seen again.
The shoe was found on Tuesday near the Lake Ontario shoreline, by a woman who was out for a walk.
Police have yet to confirm the shoe is Boucher's, but officers are on scene looking for more clues.
They plan to launch a major search next week.
Durham Police are also asking homeowners to check around on your property to ensure the missing man is not found within your neighbourhood.