Gregory Charles Dugas, 42, was last seen September 2, 1992, in Inverness Park, California. He had recently ended a 12-year relationship and friends reported he’d experienced mood swings, though they said his behavior had returned to normal in the days before he vanished. On the day he disappeared he canceled plans to meet a friend to repair his 1983 Ford Ranger and left home with about $700 in cash borrowed from his father, his house keys and a small blue backpack he often carried.

Gregory’s vehicle and most of his belongings remained at his home. He was an active environmentalist who liked hiking, backpacking and mountain biking. Some people have speculated he left voluntarily; family and friends say it would be highly uncharacteristic for him to abandon his life without warning. His case remains unsolved and authorities have not determined whether foul play was involved.

If anyone knew Gregory, saw him around Inverness Park on or after September 2, 1992, or has information about his whereabouts, please come forward.