Jackson, NJ: 5/11/1984. The Haunted Castle at Six Flags Great Adventure was a haunted attraction at Six Flags Great Adventure amusement park in Jackson Township, New Jersey. On May 11, 1984, eight teenage visitors were trapped in this attraction and lost their lives when the structure was destroyed by fire. Six Flags Great Adventure and its parent company Six Flags were indicted for aggravated manslaughter, accused of recklessly causing the deaths by taking inadequate precautions against a fire. In the trial, the prosecution argued that repeated warnings by safety consultants to install sprinklers or smoke alarms had been ignored. The defendants denied any culpability, and contended that the fire was arson and that no precautions would have saved lives. The trial jury found the defendants not guilty.