Cary Elwes, Mandy Patinkin, Chris Sarandon & Fred Savage remember Rob Reiner with touching tributes to the late filmmaker.

I didn’t know how to process it. I still don’t know how to process it,” Mandy Patinkin said in a tearful interview.

Patinkin – who starred in Reiner's 1987 classic "The Princess Bride" – mourned his director and friend Rob Reiner on Monday.

Cary Elwes mourned his former "The Princess Bride" director Rob Reiner on Monday morning in a short and sweet Instagram post ...