Carlo Pfaff, 54, was last seen on March 6, 1999, near his home in the Alpine Forest Mobile Home Park on Alpine Road in Columbia, South Carolina. He was driving a dark blue 1987 Chevrolet Astro minivan with South Carolina plates CAR 564; the vehicle has never been located.

When investigators entered his trailer, a television, radio and VCR were missing, but Carlo’s heart medication remained inside, and he was known to be legally blind. Those facts—missing belongings alongside essential medication left behind—led authorities to consider his disappearance suspicious. He had black hair receding at the temples, brown eyes, scars on his abdomen, chest and right leg, and a leopard tattoo on his left arm; he was believed to be wearing khaki pants when last seen.

The Richland County Sheriff’s Department opened an investigation that remains unresolved. Did anyone in the Alpine Forest area in March 1999 recall seeing the Astro van or notice anyone unusual around the mobile home park?