Rick Riordan: 'I feel very protective of my fans. I am aware of my responsibility to make them feel safe' | Books | The Guardian

Riordan has a particularly thorny history with adaptations. When Chris Columbus was adapting the first Jackson book, The Lightning Thief, in 2009, Riordan sent producers an excoriating and now legendary note laying out his issues with the script. In the manner of the high school teacher he once was, Riordan begins with faint praise ("there are things I like about this adaptation") before an abrupt volte face.

"Having said that, here's the bad news: The script as a whole is terrible," he wrote, in a letter so beloved by his fans that it's even been given dramatic readings. "I don't simply mean that it deviates from the book, though certainly it does that to point of being almost unrecognisable as the same story. Fans of the books will be angry and disappointed. They will leave the theater in droves and generate horrible word of mouth."