The film proves to be a mixed bag that delivers on its pedigree yet seems more concerned with setting up subsequent films than concluding its story.

With "Oppenheimer," Christopher Nolan crafts a biopic that fascinates and provokes, and is one of this summer's rare movies with something on its mind.

Watch a new "Cast" featurette for Christopher Nolan's OPPENHEIMER starring Cillian Murphy, Emily Blunt, Matt Damon, Robert Downey Jr., and Florence Pugh.