Not-So-Adapted Films by raccoonleaf

Question 11

Only two films in this (as of 2018) 5-film series are book adaptations. The first book kills off one of the film adaptation’s most beloved characters in the epilogue, so the author had to find a way to bring him back to be the main character in the sequel. Other than sharing the same main character and the setting, the book and the movie for this first sequel are pretty different animals. The same character also makes an appearance in the latest entry into the franchise. What's the name of the series?