A serial arsonist is active in Royal, Indiana. The arsonist went from setting fires in unoccupied buildings to largely populated ones. In the last two fires - in a community center and a movie theater - the death count reaches 31 people. The BAU realize that they have to tread lightly as they suspect the unsub to be a local, and with Royal being a small town, anyone they question will be the target of a public witch hunt. And with the high death count in such a small town, determining if there is a specific victimology is made more difficult. The arsonist strikes again when the BAU least expects. Because the latest fire is different than the previous ones, they believe the last fire is the one that holds the key to understanding the motivation and finding the perpetrator. This case is especially difficult for Garcia, who is asked to do things outside of her normal duties.