Granger's accident sparks a search for a traitor. NCIS: Los Angeles' little mole problem has escalated, big time. 'NCIS: LA' 'Reign Fall' Hits Close To Home For Sam [PHOTOS], Reflects On Father's Relationship Granger (Miguel Ferrer) is in the hospital during "Traitor," and it's up to Callen (Chris O'Donnell) and his team to figure out who put him there.