Don Nahaku

A science-fiction fan dressed as a superhero is murdered, and McGarrett receives a visit from a CIA agent interested in finding Yakuza.

Ben tries to persuade a determined Locke to call off his destructive plan by offering him some of the secrets of the island, and Kate's reunion with Jack does not go off as planned when she discovers that he has made a deal with "The Others."

The Five-O team are hunting a thief who stole guns from a shooting range and find out that the culprit intends to make a statement on gun violence.