Law & Order: Criminal Intent S05E21 - On Fire

When a church worker is found dead after the latest in a series of arson-fueled fires, Detectives Goren and Eames trace evidence back to the dysfunctional family of one sanctuary's youth leader, Justin Reid. Just as pressing is the personal matter weighing on Captain Deakins, whose intervention on behalf of one detective prompts a vengeful cop already in prison to launch a vendetta to oust him.