Hi, I have a friend who's 23 years old and grew up in a gnostic household. His family used to be Catholic but for reasons he doesn't know, left the church before he was born. His family never discuses religion and he considers himself to be an athiest simply because he was never guided in any direction whatsoever.
He sometimes goes to a Presbyterian church with his fiance and is open to the possibility of God; however, the Presbyterians church isn't offering the most stimulating science for him to chew on (he's a med student), and when I told him the Catholic church included faith AND reason he said that was "refreshing". I gave him the book "God at the Ritz" which is by a Priest/Physicist and he's really enjoyed it. The book is basically about being open to God and following your hearts desire for God.
However, the book doesn't go into detail on Christianity and I'd like to give him a book (for beginners) that does. I'm currently reading "Mere Christianity" by CS Lewis which is excellent but he has some views that aren't exactly Catholic.
Can anyone suggest an intelligent book that offers an introductory to Christianity from a Catholic point of view? I know Pope Benedict wrote one years ago but a don't think my friend is a big fan of his at the moment considering the allegations.