: In the final season, the Professor gives Alicia Sierra a note to give to Rafael (Berlin’s son).
: While never shown on screen, it likely referenced "Viking Gold" or "Family Tradition" to convince Rafael to return the stolen gold. Rafael’s response to Lisbon was simply, "It's a family matter". [S2E3] Lisbon
Are you interested in a on how to fold the Professor's specific origami bird? : In the final season, the Professor gives