Journalist Jon Ronson began investigating the world of wrestling after the WWE's Chris Benoit murdered his family and killed himself. Ronson and his son Joel, a wrestling fan, were able to meet WWE wrestlers during an England tour (and, later, Chris Nowinski, the former wrestler who has taken part in the Benoit investigation).
This is what Ronson learned, and what he came to believe.
It's a fascinating read, with a fundamental question: What does being a real-life superhero do to you?