They Came from the Swamp: The Films of William Grefé
- Jahr: 2016
- Land: United States of America
- Genre: Dokumentarfilm
- Studio:
- Stichwort:
- Direktor: Daniel Griffith
- Besetzung: William Grefé, Steve Alaimo, John Davis Chandler, Gary Crutcher, Frank Henenlotter, David F. Friedman