3 Must Reads

Terry Shames answers the question: What 3 mystery books are “must reads” for those who have never read mysteries before?
What a question! Before I would make such a recommendation, I need to know what kinds of books the reader likes to read: Fiction or non-fiction? Does he/she like to learn something when they read, or do they prefer to use reading as an escape? What interests them: history, science, social issues, women’s concerns, art, music? Do they like to read books set in other countries...