Flanagan's early novels originated mainly as thrillers. He started working on what would become the ''
Ranger's Apprentice'' series in the 1990s. The series originated as twenty short stories for his twelve-year-old son, Michael. Flanagan wanted to encourage his son to read and hoped that he could do so by convincing Michael that the stories were children's book ideas that his father wanted to test out. Also, since Michael was on the smaller side, Flanagan wanted to encourage him by showing that not all heroes must be big and strong. In fact, several characters in Flanagan's books are based on real-life people close to him. Will, the main character in the series, was initially based on Michael. Small, agile, and his love of climbing were all things that Michael and Will shared. Evanlyn, one of the other main characters, was loosely based on Flanagan's daughter Kitty. Finally, Halt, Will's older teacher, was also based on Flanagan's sixth-grade teacher. His son fell in love with the series and began asking for more of the stories. == Death ==