The probe of a theft of nerve gas puts McGarrett on Wo Fat's trail, which leads to Hong Kong; guest Dina Merrill.
A museum curator (Clu Gulager) plots Hawaii's most daring bank heist.
McGarrett is sure that an extortionist is responsible for the serial murders of prostitutes; guests Ned Beatty, Elaine Joyce.
Five men found in the crater of the Mauna Loa volcano died of exposure to plutonium; guests Pat Hingle, Alan Fudge.
McGarrett searches for an international assassin whose name, description and next victim are unknown.
A forger (Kevin McCarthy) steals over $14,000 from the Five-0 team, then targets a bank and the U.S. Navy.
Jack Lord
Det. Steve McGarrett
James MacArthur
Danny Williams
Kam Fong
Chin Ho
Al Harrington
Actor
Herman Wedemeyer