Hollywood secrets have become notoriously hard to keep, but Warner Bros. and the filmmakers of The Flash pulled off a doozy with the final moments of their DC film.

After more than 25 years, George Clooney returned to the role of Bruce Wayne, marking a remarkable change of heart for an actor who was unequivocally done with the role. It was also a secret that the studio was able to keep tight for close to six months.

Read the complete article on The Hollywood Reporter