They Came from the Swamp: The Films of William Grefé
- Yıl: 2016
- Ülke: United States of America
- Tür: Belgesel
- Stüdyo:
- Anahtar kelime:
- Yönetmen: Daniel Griffith
- Oyuncular: William Grefé, Steve Alaimo, John Davis Chandler, Gary Crutcher, Frank Henenlotter, David F. Friedman