Diane Van Reeth was 35 when she left her Tucson home on the morning of August 10, 1995, saying she was headed to work as a research coordinator at Tucson Electric Power. She never arrived and was not seen again. Two days later her Ford Aerostar minivan was found abandoned in the 2800 block of east Fort Lowell Road with the keys inside; there were no visible signs of a struggle at that scene and investigators initially reported no indication of foul play.

The investigation soon focused on Diane’s estranged husband, publicly known as Don Stecchi, who was actually John Joseph Kalhauser. He had a violent criminal history, was extradited to Massachusetts on outstanding assault and attempted murder charges from 1979, and was later sentenced there. Authorities classified Diane’s disappearance as a probable homicide. In 1999 Kalhauser pleaded no contest to second-degree murder in Diane’s death and received a concurrent 20-year sentence, yet Diane’s body has never been found. Her two sons were eventually adopted and raised by a cousin.

Does anyone have information about Diane’s whereabouts after August 10, 1995, or recall seeing her minivan on Fort Lowell Road during those days?