Cinema Libre Studio has acquired worldwide rights to Bruce Burgess' hot-button Holy Grail documentary Bloodline and has set the US premiere for May.

The film-makers interviewed archaeologists and members of secret societies and investigated a tomb that some say could prove the existence of a Jesus Christ-Mary Magdalene bloodline.

The subject of the bloodline was famously fictionalised in Sony's 2006 adaptation of the Dan Brown bestseller The Da Vinci Code.

'Filmmakers Bruce Burgess and Rene Barnett have turned up some fascinating findings and connections that will cause even the strongest skeptic to take notice,' Cinema Libre chairman Philippe Diaz said.