During the Civil War, Confederate soldiers accidentally free an evil voodoo entity brought back by slave traders. The entity possesses the dead bodies of both Union and Confederate soldiers creating an army of its own bent on conquest.
Unfortunately the movie Grey Knight is not yet available on HBO Max.
| Directing | George Hickenlooper | Director |
| Crew | Kent L. Wakeford | Cinematography |
| Editing | Monte Hellman | Editor |
| Editing | Esther P. Russell | Editor |
| Production | Bradley Jenkel | Producer |
| Production | Fred T. Kuehnert | Producer |
