From Divergent to Paper Towns to Percy Jackson, authors of popular YA books are selling their movie rights at every turn. Some authors ultimately regret this decision, but sometimes, the movies are a huge success.

On September 18, The Scorch Trials, based off the 2010 book by James Dashner, was released. Readers were both disappointed and pleasantly surprised by the apparent differences between the book and the movie. Fans are not the only people to notice these changes—movie star Dylan O’Brien discussed them in an interview earlier this year. Dylan mentioned how the telepathy aspect between Thomas and Theresa was completely dropped in the movie, which changed the direction of their relationship. “For me, in the book, what I noticed, the spirit, we’re not doing it entirely because we don’t have the telepathy thing, but they’re distant. All of a sudden, that connection isn’t there,” O’Brien dishes.

In the second book of the trilogy, the circumstances were obviously dire from the moment that the main characters woke up on their first day. They open a door to find dead, bloody bodies hanging from the ceiling. They had no food, no way out of the building, and they were missing Theresa. Nearly dead, they give up on finding a solution.

However, the movie spares both the viewer and the characters from witnessing that gore. The Gladers are instead given clean clothes and a nice breakfast and were, as far as they knew at that point, saved.

The Scorch Trials movie may have an altered storyline, but it does not fail to include the action and drama promised in the young adult novel.