Steven Dym fatally gunned down his wife and teen daughter and then killed himself inside their mansion Friday morning August 25 2017, police sources said. In 1992, Steven Dym’s mom, Paula, attacked his dad, Lawrence, with a hatchet while he slept, according to LoHud.com. Lawrence survived and Paula was hospitalized for psychiatric evaluation, the site reports. Steven went on to become CEO of Gabriel Management in New York City — a real-estate company founded by his dad. The family’s own house — a 4,551-square-foot home with five bedrooms, 4¹/₂ bathrooms and a giant backyard with a pool, pergola and pond — is on the market for $1.7 million. Loretta Dym was a vice president of Club Quarters Hotels in Manhattan. She also volunteered for the Make-A-Wish foundation Their daughter, Caroline, was a talented student-athlete at Sacred Heart Greenwich. The family also has a 20-year-old son, William, who was away at the University of Southern California at the time of the murders. The Dyms were donors during Andrew Cuomo’s failed gubernatorial run in 2002.