Watch a sneak peek of Criminal Minds Season 4 Episode 19, ''House on Fire''

The BAU team must track down a serial arsonist who instills fear in a small town by setting fire to community meeting places and killing several residents in the process, on CRIMINAL MINDS, Wednesday, March 25 (9:00-10:00 PM, ET/PT) on the CBS Television Network.

To Watch The Preview Click here.

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