Brian Grazer and John Calley are producing the Sony Pictures Entertainment project, from Akiva Goldsman's adaptation of Dan Brown's best-selling novel. Goldsman won an Oscar for his adapted screenplay for Howard's "A Beautiful Mind."
McKellen will play a wealthy benefactor who helps Harvard symbologist Robert Langdon (Tom Hanks) but has his own designs on acquiring the Holy Grail. Molina will play Bishop Arigarosa. The cast also includes Audrey Tautou and Jean Reno.
Production is scheduled to begin in June, with plans for a May 2006 release.