Wolf was last seen at his farm in the 4200 block of 395th Street in Stanberry, Missouri on May 5, 2011. He has never been heard from again. He left his vehicle and cellular phone behind, but a 9mm pistol and a shotgun disappeared with him. Wolf wasn't reported missing until late May, about three weeks after his disappearance.

Randal “Randy” Evans is a suspect in Wolf's disappearance. In June 2011, he was arrested on four felony charges: two count of possession of methamphetamine with intent to produce, one count of possession of a controlled substance and one count of second-degree assault. The charges stem from an incident with Wolf that took place prior to Wolf's disappearance: while the two men were smoking methamphetamine together with another man in Evans's house, Evans reportedly waved a loaded pistol in Wolf's face and stuck the barrel in his mouth. These charges aren't related to Wolf's actual disappearance.

Some agencies report Wolf disappeared from Albany, Missouri. His case remains unsolved and he's considered endangered.