[1] Stephen Aloysius "Steve" McGarrett (Jack Lord) is embroiled in a tale of espionage and murder in this story, which marks the first appearance of villain Wo Fat (Khigh Dhiegh).

The governor of Hawaii assigns McGarrett to break a ring of con artists swindling/killing visiting rich widows.

Kevin McCarthy, Louise Troy, Arlene McQuade, June Dayton and Patricia Smith guest stars.

The Five-O team works overtime when Danny is indicted for the murder of an apparently unarmed teenage boy.

McGarrett goes undercover as a safe-cracker to join a gang planning a robbery at sea, with a mastermind who delivers instructions by tape.