Deborah DiLorenzo was 33 when she disappeared from her Stony Brook, New York, home in the spring of 1984. She was last seen on April 3, a day when her husband was being served divorce papers. She left behind her children, her car, and her purse — possessions investigators say she would not normally abandon. At the time she was wearing a black sweater, a multicolored floral blouse, jeans, and a tan jacket.

Authorities suspected foul play and considered the timing of the disappearance, tied to the divorce papers, a key factor; her husband was treated as a potential suspect but he died in 1986, which closed that line of inquiry in practical terms. The case remains open and unsolved with the Suffolk County Police Department. Few core facts are clear; many questions about what happened that April day remain unanswered.

If anyone knew Deborah, her routines, or saw anything in Stony Brook around April 3, 1984, please share what might help this cold case.