When the wife of an up-and-coming congressman disappears, the BAU investigates his political enemies as possible suspects.
Confronted with a crisis involving one of their own, Ray and his team strategize how to use art from the Kovitzsky gallery as leverage. Meanwhile, after Hector's wife informs him that she and their daughter are moving to escape the incest scandal, he reaches a breaking point and enlists Ray's help in fixing the situation.
As Ray devises another attempt to save Avi and settle his debts to the mob, FBI agent Frank Barnes detains him before he can execute his plan, forcing Ray to send Mickey to Vegas to place a high-stakes bet on the boxing match between Hector and Whittaker. Barnes offers Ray a chance to turn informant against Dmitri in exchange for protection, leading him to question whether he's turning into his father.
After fighting off an assassin in his own home, McGarrett and Joe White (guest star Terry O’Quinn) flee to Montana to prepare for a battle against those exacting revenge for a past SEAL mission.
While Jonas is tracking down a Russian terrorist cell, a kidnapped Molly is used as bait.
