Navy seaman Kyle Antonacci was found hanging by a belt in the closet of his room at Naval Station Great Lakes in Illinois in February 2010. The cause of death was ruled asphyxia by hanging -- but how he died has not yet been determined.
While officials with the Lake County Coroner's Office and the Naval Criminal Investigative Service continue to study the 22-year-old's death, Kyle's parents say they are sure he didn't commit suicide. They believe he was murdered.
This five-part series, reported by Patch, explores Kyle’s story and his death through interviews with his friends and family, examination of court records, secretly recorded conversations and medical documentation.