Thomas Krnak was 21 when he disappeared with his parents, Allen and Donna Krnak, after they left Helenville, Wisconsin, to go to their cabin for the July 4th weekend on July 2, 1998. A week later their truck was found abandoned in a forest near Reedsburg, Wisconsin; it had been wiped clean of fingerprints and neither the family nor their dog were with the vehicle.

In 1999 Allen’s remains were recovered in North Carolina; the cause of death was blunt force trauma. Near his body investigators found a woman’s t-shirt, men’s briefs, Donna’s wedding ring, and the dog’s remains, believed to be the family pet. Donna and Thomas have never been found.

Thomas’s brother, Derek Anderson (formerly Andrew Krnak), who was the last person reported to have seen the family, was convicted in 2006 of Allen’s murder. Authorities suspect Anderson may also have been involved in Donna and Thomas’s disappearances, and believe their remains could be somewhere between Wisconsin and North Carolina.

Did anyone who knew Thomas or the family travel that route around July 1998 or recall seeing their truck in the days after July 2?