Cillian Murphy was shocked when Christopher Nolan called him to discuss his new movie "Oppenheimer."

Murphy had always played supporting roles in Nolan's films, but this time Nolan wanted him to take the lead.

Murphy expressed his willingness to work on any film with Nolan, regardless of the role's magnitude 

Murphy and Nolan first collaborated in 2003 for the Batman series, and they have since developed a strong mutual respect.

Murphy read the script for "Oppenheimer" and considered it the best book he had ever read 

The movie focuses on J. Robert Oppenheimer, the theoretical scientist who played a crucial role in the development of the atomic bomb.

Oppenheimer's actions led to the bombings of Hiroshima and Nagasaki and the subsequent nuclear arms race 

"Oppenheimer" features a star-studded cast, including Emily Blunt, Matt Damon, and Robert Downey Jr 

Murphy appreciates Nolan's ability to create challenging human stories and his command of filmmaking techniques 

The details of "Oppenheimer" are being kept under wraps, but Murphy believes that Nolan's presentation will astound and surprise viewers