It’s the highest honor in the Catholic Church, but what does it take to become a saint? The mysterious saint-making tradition that started in the Middle Ages is still alive and well today. But these days, you not only need a couple of miracles—you need power, influence, and lots of money.

Drew Griffin examines the business of making saints, one of three in-depth stories in one riveting hour hosted by CNN’s Randi Kaye and Dr. Sanjay Gupta. Don't miss CNN Presents this Saturday at 8pm ET, re-airing at 11pm and 2am ET.