The BAU team investigates the mass murder of college students, similar to wartime methods used by an Indian tribe long ago.
Spencer decides to take the hit for Vernon; Julie and Bella commiserate; Ricky lashes out; Jason is unsettled by his mother's new boyfriend; Spencer and Charles say goodbye to Rodney.
When secret information about suspected terrorists goes missing from a secure Department of Defense container at the site of a fire, Sam and Callen must go under cover to investigate.
