The Special Projects team travels to Romania to search for Hetty, while delving into the history of the Comescu crime family, and their connection to Callen. Hetty confronts Alexa, matriach of the Comescu family, and it is revealed that Callen's grandfather was an OSS agent who killed several members of the family; the Comescus retaliated, killing his mother, but leaving Callen and his sister