Randall Thropp was the pharmacist responsible for producing and dispensing drugs and medicines at the Vannacutt Psychiatric Institute for the Criminally Insane. Thropp was killed during the 1931 revolt and his soul became part of the darkness, along with all the other staff and patients who died . It can also be presumed that Thropp's ghost was freed from the house when Ariel Wolfe removed the Baphomet Idol from the building in Return to House on Haunted Hill.