Carlos Bernard

When a government whistleblower is murdered, Beckett and Castle must figure out who is responsible and determine why Homeland Security is trying to take over the case.

After a 747 explodes over the Mohave Desert, Jack investigates while he continues to search for Senator David Palmer's potential assassin and the whereabouts of his daughter. Meanwhile, Palmer discovers another threat to his campaign is about to surface.

McGarrett asks Catherine for her help in locating his mother and the team calls on August March for his assistance when an art heist turns deadly.

McGarrett plays cat and mouse with a smart and seductive therapist he believes murdered her patient. Meanwhile, Catherine must hunt down one of Doris's old targets who is now seeking revenge. Vanessa Marcil and Carlos Bernard guest star.

CTU discovers that a backup plan is under way to assassinate Senator Palmer. There are more foreign shooters hired and they may already be in the country. Meanwhile, Palmer must deal with the fact that some people financing his campaign are blackmailing him.