Arnold Tittel, 39, disappeared on November 5, 1978, while on a boating trip at Folsom Lake, California. He and his friend Virgil Bonham were last seen at 12:30 p.m., having stopped at a service station before heading to the lake. They planned to return by 5:00 p.m. but never did.

Their 12-foot fiberglass boat was found adrift and fully functional in the middle of Folsom Lake around 3:00 p.m., while their vehicle remained in the parking lot with wallets, clothes and money inside. Only the men’s cigarettes and lighters were missing; both were known to be heavy smokers. Conditions that day were reported favorable and both men were described as excellent swimmers, yet authorities have said the pair may have drowned. No trace of their bodies was ever found and the disappearance remains unresolved and highly suspicious.

Did anyone see Tittel or Bonham at Folsom Lake that afternoon, or have information about the stop at the service station?