A vigil is set up in town to remember the victims. Emily and Derek go to the theater and learn that the fire was set by gas and a match. They also learn that the killer turned off the the water line, so the sprinklers never turned on. Derek looks at the signs of the victims struggling to break free. David talks to the fire department and they tell him that most teenage boys in the town play with fire. David asks if there is anything that may have happened that was not reported.

The team reconvenes at the headquarters and no one has found anything out of the ordinary. Garcia tells the team that she found a couple of names that she is looking into further. She says she also found a few other gasoline and wooden match arsons in a nearby town. Spencer asks if there is any crossover between the residents of the two towns. Hotch tells her to look into any potential enemies between the two towns. Garcia tells Hotch that she is not a profiler and she does better with technology. He tells her that they need her to look into the peoples lives for the case.

The team goes to the church service to try to see if they can pinpoint any suspects. They see several young men who have histories of arson. They then hear a fire engine and the team investigates the fire. They are confused because they thought the unsub would have been at the memorial service. The fire chief tells them that the fire was caused by a cocktail thrown through the window. The team realizes the delivery method has changed. They see locks on the gate and figure the victim wanted to make sure no one got out. Derek sees that the chain is different than the previous fires. He tells the chief that something has changed. He says either there is a second arsonist or something has changed inside the arsonist. They then learn that there are four deaths from the fire and one person in the hospital.

Derek calls Garcia and she tells him about the victims. She says many of them have had questionable histories. She mentions a man who sued his company over nothing, a man who beat his wife, and a woman who cheated on her terminally ill husband. Derek tells her that he has a few more names for her to investigate.