The Thing that Couldn't Die is a 1958 American horror film about a man executed for sorcery 400 years in the past whose detached head hypnotizes people in order to have them reunite his head with his body so he could live and feast on the blood of people. It was produced and directed by Will Cowan and starred William Reynolds, Andra Martin, Jeffrey Stone, and Carolyn Kearney. Based on an original screenplay by David Duncan for Universal Pictures, it was released in the United States on a double bill in May 1958 with the British Hammer Films classic Horror of Dracula.