I've just started reading Conclave by Robert Harris and it reminded me of a novel I've previously read but I can't find it despite racking my brains and googling. It's definitely a novel, not non fiction. About a young man who is supposed to be guarding Pope John Paul I but is called away and then the Pope dies. I also seem to remember him kind of stalking /fantasising about a woman in a bar and following her home, then being found out. There are real characters from the Vatican in it too I think, and I found it really interesting and fascinating at the time. Can anyone put me out of my misery??