Fr Patrick Peyton was a Mayo-born priest, who became an improbable media mogul and friend of the stars and an even more unlikely CIA secret agent during the Cold War. Now he's the subject of a remarkable new RTÉ documentary, Guns & Rosaries. Producer Peter Kelly reveals how, in order to bring that great, untold story to RTÉ One, he, too, had to recruit Hollywood A-listers and to mine a rich seam of archive. It’s not often that we set out to make a religious biographical film and find ourselves dealing with issues of Hollywood glamour, Irish American social mobility, geopolitics and the actions of the CIA during the Cold War. Yet this is the background story to the life and times of Fr Patrick Peyton.