Return of the Living Dead (1985) is a horror-comedy Film written by Dan O'Bannon, starring Clu Gulager, James Karen, Don Calfa, Thom Mathews, Beverly Randolph and Linnea Quigley. Return is based on the premise that Night of the Living Dead was based on actual events, caused when a gas called 2-4-5 Trioxin was released into the morgue in the basement of a VA hospital in Pittsburgh, causing the bodies to jerk around as if they were alive. Unable to contain the undead threat, the military stored the lively corpses in sealed barrels. When the story leaked out, the government allowed Night of the Living Dead to be made, but they ordered the filmmakers to alter the story and claim it was fictional.