The death of 27-year-old actor Jonathan Brandis has been officially ruled a suicide. According to a coroner's report, the SeaQuest DSV star hung himself with a nylon rope in the hallway of his Los Angeles apartment complex on Nov. 11. He was found unconscious that night and rushed to a hospital, where he died the next day. Most recently, Brandis had a starring role in the ABC drama pilot 111 Gramercy Park.