Stephen Liou was last seen in Toronto, Ontario, on the morning of May 13, 2004. He left his home at about 8:00 a.m. and did not return; his whereabouts have been unknown since. He was 55 years old, about 68 inches tall and weighed roughly 170 pounds at the time of his disappearance. No clothing description or stated destination has been found.

On the same day another man named Peter Liou, age 57 or 58, also went missing in Toronto. The two men are described as known associates, but the nature of their relationship and the circumstances linking their disappearances are not documented. There have been few public details, media accounts, or official updates about either case.

If anyone knew Stephen, Peter, where they worked, or saw them in Toronto around May 13, 2004, please share what you remember.