
Onyx: Kings of the Grail
- Curs: 2019
- País: Spain
- Gènere: Documentary, History
- Estudi: Sevenfor
- Paraula clau: based on novel or book, holy grail, docudrama, semi-documentary, jesus christ
- Director: Roberto Girault
- Repartiment: Jim Caviezel, Maria de Medeiros, Anthony Howell, Ricard Sales, Maarten Dannenberg, Rafael Rojas