Conclave: Inside the secret election to choose the next Pope - The method the Catholic Church uses to select their leader has remained virtually unchanged for the last 800 years

Conclave” the film may have introduced moviegoers to the spectacular ritual and drama of a modern conclave, but the periodic voting to elect a new pope has been going on for centuries and created a whole genre of historical trivia.

Pope Francis's death at the age of 88 means the Catholic Church must choose a new leader. Here's how cardinals elect the next pontiff at the conclave.