The passing of Pope Francis means that cardinals will elect a new leader for the Catholic Church. Robert Harris, the author of “Conclave” which inspired the Oscar-award winning film, sheds light on how that process will unfold.

As Pope Francis's funeral approaches, 'Conclave' author Robert Harris discusses the papal selection process and why predicting the next pope is impossible.

The Catholic Church's senior members will gather for the conclave to elect a new pope in the coming weeks. Robert Harris, the author of "Conclave" that was the inspiration behind the movie released last year,