Catholics love their saints. But it's not easy to become one. On this special Deep Dive episode of “Inside the Vatican,” we take you inside the grueling process of saint-making, which starts at a local diocese and involves dozens of people, a long paper trail with the Vatican, travel for miracle verification and a lot of money.

We’ll hear from Vatican historians and journalists about how the process evolved from folks being devoted to holy people in their cities to a codified Vatican process. We’ll talk with individuals who are working on Dorothy Day's canonization cause in New York about how the significant cost and local politics can lead to causes being delayed indefinitely. And finally, we’ll look into how miracles are verified—and why some people think that ought to change.

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