William Martin Vosseler was 2 years old when he vanished from Rochester, New Hampshire, on October 9, 1986. He disappeared the same day as his 3-year-old brother, Charles Jason CJ Vosseler, after being taken by their non-custodial father, Charles Martin Vosseler Jr. Charles told the boys’ mother, Ruth Parker, he was taking them for a weekend visit and never returned.

In the weeks before the abduction Charles reportedly cleared out his office, dismissed employees, removed photographs of the children, drained joint bank accounts and auctioned many family belongings. Federal and state warrants were issued shortly afterward, including for unlawful flight to avoid prosecution. He was later linked to multiple states and used aliases such as Dr. Charles Wilson; a 1987 sighting in Stilwell, Oklahoma prompted a search but Charles fled, allegedly burning his house and possessions.

Neither Charles nor the boys have been located. Age-progressed images have been released and the FBI is offering a reward for information. If anyone has memories, sightings, or records that could help locate William, please share what is known.