Onyx: Kings of the Grail
- Cast: Jim Caviezel, Maria de Medeiros, Anthony Howell, Ricard Sales, Maarten Dannenberg
- Duration: 85 minutes
- Genre: Documentary, History
- Rating: 6/10
- Release Date: 2019-03-22
Egypt, 11th century. When a famine ravages the country, the prosperous Andalusian kingdom of Denia comes to the aid of the sultan, who, in gratitude, gives Denia the most sought-after and coveted object in all of Christendom.
