21. On Fire

A church worker Margaret Collo ( Beth Fowler ) is found dead after a series of arson attacks initially on a number of churches. Goren and Eames trace evidence back to the dysfunctional family of the Reids; handsome youth leader Justin Reid ( Josh Hamilton ), his step parents Regina ( Theresa Russell ) and Terry ( Joseph Siravo ), their disaffected son Glynn ( Adam Scarimbolo ) and best friend Charlie Taylor ( Jeremy Webb ). The detectives discover that Glynn is the son of Regina and Justin who was conceived while Terry was away. Glynn burned down the churches with Charlie when he learned the truth about his birth in an anonymous letter from Collo.

Later, Justin killed Charlie to deflect the blame away from Glynn without realizing that Glynn was his son. Meanwhile, Capt. Deakins is investigated for apparently abusing his position to promote the officer who exonerated Logan for murdering an undercover policeman in "To the Bone". Although Goren and Eames uncover that he has been is set up by Frank Adair ( Michael Rispoli ) who has a vendetta against him after the events in "My Good Name", Deakins nevertheless decides to resign.