The Brief According to a criminal complaint obtained by FOX 29, Kevin Castiglia allegedly confessed to hospital staff and police that he had killed his parents and sister. The Bucks County District Attorney’s Office also addressed the deaths of Frederick, Judith, and Deborah Castiglia in a Wednesday afternoon press conference. What we know:According to a criminal complaint obtained by FOX 29, Kevin Castiglia, 55, while in police custody, confessed to fatally stabbing his family to death. The boyfriend told police that he had previously checked Deborah’s Doylestown home and twice knocked on the door at her parents' home in Churchville. Dig deeper:The Centennial School District confirmed on Wednesday that Deborah Castiglia had been a teacher in the district since 1999.