Adamczak was last seen in Wellston, Michigan on August 13, 1995. He has never been heard from again. His vehicle, a red or burgudy 1985 Plymouth Reliant with the Michigan license plate number JHH981, was later found near his home. It was impounded sometime that same year. There is no record of the vehicle being used after it was impounded. Adamczak's disappearance wasn't reported until 2002.

In September 2011, sixteen years after Adamczak's disappearance, Rosemary Stephanie Skrzycki was charged with his murder. Little information has been released about the case against her, but authorities stated they'd recently uncovered new evidence which lead to the charge. Skrzycki is awaiting trial. Adamczak has never been found.