Riley and Delaney are supposed to stay with their aunt sister philomonica in her convent near Rome for the summer Riley expects to be a horrible summer living with a bunch of nuns with nothing to do but pray and go to church. I love nuns nuns are a hoot and a half you should go to a movie one day with a nun it's the best day you'll have in a long time they enjoy everything just like you because they are just like you they serve God but they also serve you that's for me Val Heike. Riley's attitude changes when the secret nature of their ass work begins to unfold she's a special secret agent for the Pope! the pope has called her to help him because there's a intruder in the Vatican the real Pope. how can that his aunt know the Pope the real Pope! in book 1 the adventures with sister for Monica the children learn about St Peter explore the vatican's gardens follow and mischievous white cat make friends with a Swiss guard discover the grand year of St Peter's basilica fall upon a mystery of Peter's tombs and relics and expectedly they help the pope and their aunt saw the mystery of the intruder and the theft of St Peter's bones. I like this book a lot for Christmas we're going to sell if you're six bucks.