Episode: 1x01 | Airdate: Sep 20, 1968
McGarrett investigates the death of a friend when it becomes apparent that the man did not drown as was commonly believed.
Episode: 1x01 | Airdate: Sep 20, 1968
McGarrett investigates the death of a friend when it becomes apparent that the man did not drown as was commonly believed.
Episode: 1x02 | Airdate: Sep 20, 1968
McGarrett's investigation of an old friend's drowning points to a foreign ship moored in a Hawaiian harbor.
Episode: 1x03 | Airdate: Sep 26, 1968
The Hawaiian governor assigns McGarrett to break a ring of con artists swindling visiting rich widows; guest Kevin McCarthy.
Episode: 1x04 | Airdate: Oct 3, 1968
An official's death involves strange clues, including a woman with a camera and a man with a briefcase; guest Simon Oakland.
Episode: 1x05 | Airdate: Oct 10, 1968
A publicity stunt by a rock singer (Sal Mineo) to stage his own kidnapping backfires when ransom is offered; guest Sam Melville.
Episode: 1x06 | Airdate: Oct 17, 1968
McGarrett must protect an underworld kingpin (Ricardo Montalban) he is trying to convict of racketeering activities.
Episode: 1x07 | Airdate: Nov 7, 1968
The Five-0 team works overtime when Danny is indicted for the murder of an apparently unarmed teenage boy; guest Gavin MacLeod.
Episode: 1x08 | Airdate: Nov 14, 1968
The owner of a tuna boat uses his craft to smuggle gold bars into the islands; guest Paul Richards, Marj Dusay.
Episode: 1x09 | Airdate: Nov 21, 1968
McGarrett goes under cover in a California prison to find the connection between a girl's death and the theft of a gem collection.
Episode: 1x10 | Airdate: Dec 5, 1968
A singer (Tommy Sands) turns to cat burglary when his musical efforts fail to satisfy his mounting gambling debts.
Episode: 1x11 | Airdate: Dec 12, 1968
An Army corporal is accused of a crime after a winning ticket in a numbers game turns out to be a loser; guest James McEachin.
Episode: 1x12 | Airdate: Dec 19, 1968
Danny takes over and starts a desperate search for clues after McGarrett is felled by an unknown assailant.
Episode: 1x13 | Airdate: Dec 25, 1968
Five-0 fights to save the life of gangster so that he can testify against his boss; guest Nehemiah Persoff, James Shigeta.
Episode: 1x14 | Airdate: Jan 1, 1969
A large footprint and a circular mark made in mud provide Five-0 with the only clues to a lovers' quarrel that turned into murder.
Episode: 1x15 | Airdate: Jan 8, 1969
A Marine veteran (Yaphet Kotto) suffers a breakdown and, believing he is back in Vietnam, takes Danny hostage in a hospital ward.
Episode: 1x16 | Airdate: Jan 15, 1969
A girl dies under the influence of drugs possibly supplied by a self-proclaimed guru; guest Ed Flanders.
Episode: 1x17 | Airdate: Jan 22, 1969
A man carrying bubonic plague arrives in the islands the same time as plans for a top-secret weapon vanish; guest Jackie Coogan.
Episode: 1x18 | Airdate: Jan 29, 1969
McGarrett offers himself as a hostage in an attempted prison break by two ``lifers''; guests Gavin MacLeod, Gerald S. O'Loughlin.
Episode: 1x19 | Airdate: Feb 5, 1969
Employees of a family-owned business are threatened and the company's matriarch vanishes; guests Farley Granger, Jeanette Nolan.
Episode: 1x20 | Airdate: Feb 12, 1969
A policeman wants to avenge the murder of his son, a prizefighter paid to fix a bout; guest Jesse White.
Episode: 1x21 | Airdate: Feb 19, 1969
McGarrett travels to Los Angeles to investigate a physician who is victimizing his sister and her child.
Episode: 1x22 | Airdate: Feb 26, 1969
Despite public sentiment and a lack of damaging evidence, McGarrett takes Dr. Fremont (Joanne Linville) to court.
Episode: 1x23 | Airdate: Mar 5, 1969
McGarrett must determine whether the leader of a peace movement who was shot and killed was the assassin's intended target.
Episode: 1x24 | Airdate: Mar 12, 1969
Chin Ho and Dan Williams are tracking a safecracker but he pulls a gun and Danno ends up shooting him. McGarrett takes the identity of Harry Brown and must infiltrate a sophisticated gang of international thieves.
Episode: 1x25 | Airdate: Mar 19, 1969
Visions of an ancient volcano goddess figure in plans to kill an old man to gain control of his land; guest Sally Kellerman.
Episode: 2x01 | Airdate: Sep 24, 1969
Three wives of men killed in Vietnam die after collecting their husbands' G.I. insurance; guests Harry Guardino, Loretta Swit.
Episode: 2x02 | Airdate: Oct 1, 1969
A deranged Japanese man returns to Hawaii to complete his mission to destroy Pearl Harbor; guest Mark Lenard.
Episode: 2x03 | Airdate: Oct 8, 1969
Agents of the People's Republic of China use a false tidal-wave forecast to mask the kidnapping of a scientist (Will Geer).
Episode: 2x04 | Airdate: Oct 15, 1969
A small-town salesman witnesses a prostitute's murder but refuses to testify; guest Elaine Joyce. Directed by Nicholas Colasanto.
Episode: 2x05 | Airdate: Oct 22, 1969
Members of a small, foreign guerrilla force burglarize an armory to steal weapons for a revolution in their country.
Episode: 2x06 | Airdate: Oct 29, 1969
A radical Maoist attending college in Hawaii is found dead as evidence links him with a Chinese intelligence operation.
Episode: 2x07 | Airdate: Nov 5, 1969
A foreign agent (Theodore Bikel) threatens germ warfare and the end of Hawaii's sugar industry; guests Philip Ahn, Soon-Teck Oh.
Episode: 2x08 | Airdate: Nov 12, 1969
A prank turns serious when university students who stole the cherished robe of King Kamehameha decide not to bring it back.
Episode: 2x09 | Airdate: Nov 19, 1969
A woman, the only witness to a murder by a wanted Hawaiian crime figure, asks McGarrett to come to Singapore and escort her back.
Episode: 2x10 | Airdate: Nov 26, 1969
McGarrett's investigation of a former mobster implicates a state committee head; guests James Gregory, Keye Luke.
Episode: 2x11 | Airdate: Dec 3, 1969
McGarrett must protect a dictator whose jet made a forced emergency landing in Hawaii; guest Paul Stevens.
Episode: 2x12 | Airdate: Dec 10, 1969
After his kidnapped son escapes, a wealthy man demands McGarrett recover the $300,000 ransom he paid to the boy's abductors.
Episode: 2x13 | Airdate: Dec 17, 1969
A Texas heiress (Beverlee McKinsey) pits a beachboy against a playboy in a bizarre card game in which their lives are the stakes.
Episode: 2x14 | Airdate: Dec 24, 1969
An adversary (William Windom) of McGarrett's pulls off the perfect heist in front of Five-0; guest Jackie Coogan.
Episode: 2x15 | Airdate: Dec 31, 1969
An order from the governor is necessary to stop blinded McGarrett from pursuing the assailant responsible for his loss of sight.
Episode: 2x16 | Airdate: Jan 7, 1970
The girlfriend of a fitness guru dies while attempting a hanging-type exercise.
Episode: 2x17 | Airdate: Jan 14, 1970
McGarrett clashes with the Navy when he tries to bring in a suspect in a shore patrolman's murder; guest Christopher Walken.
Episode: 2x18 | Airdate: Jan 21, 1970
Someone is deliberately tormenting a disturbed Vietnam veteran guilty of kidnapping.
Episode: 2x19 | Airdate: Jan 28, 1970
An angry man seeks revenge after a crooked poker game costs the life of his honeymooning brother; guests Jack Soo, John Colicos.
Episode: 2x20 | Airdate: Feb 4, 1970
One of McGarrett's most trusted investigators is accused of accepting a bribe from a major narcotics dealer; guest Martin Sheen.
Episode: 2x21 | Airdate: Feb 11, 1970
A grief-stricken policeman takes the law into his own hands after his wife is murdered; guests Tom Skerritt, Sam Melville.
Episode: 2x22 | Airdate: Feb 18, 1970
A renowned research scientist, conned into believing he shot and killed a man, disappears from his important government assignment.
Episode: 2x23 | Airdate: Feb 25, 1970
A scientist (Ed Flanders) vanishes after discovering a deadly biological mutation.
Episode: 2x24 | Airdate: Mar 4, 1970
The Five-0 team has 12 hours to learn where a scientist (Ed Flanders) hid a vial of deadly mutant microbes.
Episode: 2x25 | Airdate: Mar 11, 1970
A beautiful thief (Joanne Linville) posing as a socialite schemes to steal a Hawaiian royal jewel; guest George Gaynes.
Episode: 3x01 | Airdate: Sep 16, 1970
Episode: 3x02 | Airdate: Sep 23, 1970
Episode: 3x03 | Airdate: Sep 30, 1970
Episode: 3x04 | Airdate: Oct 7, 1970
Episode: 3x05 | Airdate: Oct 14, 1970
Episode: 3x06 | Airdate: Oct 21, 1970
Episode: 3x07 | Airdate: Oct 28, 1970
Episode: 3x08 | Airdate: Nov 4, 1970
Episode: 3x09 | Airdate: Nov 11, 1970
Episode: 3x10 | Airdate: Nov 18, 1970
Episode: 3x11 | Airdate: Nov 25, 1970
Episode: 3x12 | Airdate: Dec 2, 1970
Episode: 3x13 | Airdate: Dec 9, 1970
Episode: 3x14 | Airdate: Dec 16, 1970
Episode: 3x15 | Airdate: Dec 30, 1970
Episode: 3x16 | Airdate: Jan 6, 1971
Episode: 3x17 | Airdate: Jan 13, 1971
Episode: 3x18 | Airdate: Jan 27, 1971
Episode: 3x19 | Airdate: Feb 3, 1971
Episode: 3x20 | Airdate: Feb 10, 1971
Episode: 3x21 | Airdate: Feb 17, 1971
Episode: 3x22 | Airdate: Feb 24, 1971
Episode: 3x23 | Airdate: Mar 3, 1971
Episode: 3x24 | Airdate: Mar 10, 1971
Episode: 4x01 | Airdate: Sep 14, 1971
Episode: 4x02 | Airdate: Sep 21, 1971
Episode: 4x03 | Airdate: Sep 28, 1971
Episode: 4x04 | Airdate: Oct 5, 1971
Episode: 4x05 | Airdate: Oct 12, 1971
Episode: 4x06 | Airdate: Oct 19, 1971
Episode: 4x07 | Airdate: Oct 26, 1971
Episode: 4x08 | Airdate: Nov 2, 1971
Episode: 4x09 | Airdate: Nov 9, 1971
Episode: 4x10 | Airdate: Nov 16, 1971
Episode: 4x11 | Airdate: Nov 23, 1971
Episode: 4x12 | Airdate: Nov 30, 1971
Episode: 4x13 | Airdate: Dec 21, 1971
Episode: 4x14 | Airdate: Dec 28, 1971
Episode: 4x15 | Airdate: Jan 4, 1972
Episode: 4x16 | Airdate: Jan 11, 1972
Episode: 4x17 | Airdate: Jan 18, 1972
Episode: 4x18 | Airdate: Jan 25, 1972
Episode: 4x19 | Airdate: Feb 1, 1972
Episode: 4x20 | Airdate: Feb 8, 1972
Episode: 4x21 | Airdate: Feb 15, 1972
Episode: 4x22 | Airdate: Feb 22, 1972
Episode: 4x23 | Airdate: Feb 29, 1972
Episode: 4x24 | Airdate: Mar 7, 1972
Episode: 5x01 | Airdate: Sep 12, 1972
Episode: 5x02 | Airdate: Sep 19, 1972
Episode: 5x03 | Airdate: Sep 26, 1972
Episode: 5x04 | Airdate: Oct 3, 1972
Episode: 5x05 | Airdate: Oct 10, 1972
Episode: 5x06 | Airdate: Oct 17, 1972
Episode: 5x07 | Airdate: Oct 24, 1972
Episode: 5x08 | Airdate: Oct 31, 1972
Episode: 5x09 | Airdate: Nov 14, 1972
Episode: 5x10 | Airdate: Nov 21, 1972
Episode: 5x11 | Airdate: Nov 28, 1972
Episode: 5x12 | Airdate: Dec 5, 1972
Episode: 5x13 | Airdate: Dec 19, 1972
Episode: 5x14 | Airdate: Jan 2, 1973
Episode: 5x15 | Airdate: Jan 9, 1973
Episode: 5x16 | Airdate: Jan 16, 1973
Episode: 5x17 | Airdate: Jan 23, 1973
Episode: 5x18 | Airdate: Jan 30, 1973
Episode: 5x19 | Airdate: Feb 6, 1973
Episode: 5x20 | Airdate: Feb 13, 1973
Episode: 5x21 | Airdate: Feb 20, 1973
Episode: 5x22 | Airdate: Feb 27, 1973
Episode: 5x23 | Airdate: Mar 6, 1973
Episode: 5x24 | Airdate: Mar 13, 1973
Episode: 6x01 | Airdate: Sep 11, 1973
Episode: 6x02 | Airdate: Sep 18, 1973
Episode: 6x03 | Airdate: Sep 25, 1973
Episode: 6x04 | Airdate: Oct 2, 1973
Episode: 6x05 | Airdate: Oct 9, 1973
Episode: 6x06 | Airdate: Oct 16, 1973
Episode: 6x07 | Airdate: Oct 23, 1973
Episode: 6x08 | Airdate: Oct 30, 1973
Episode: 6x09 | Airdate: Nov 6, 1973
Episode: 6x10 | Airdate: Nov 13, 1973
Episode: 6x11 | Airdate: Nov 20, 1973
Episode: 6x12 | Airdate: Nov 27, 1973
Episode: 6x13 | Airdate: Dec 4, 1973
Episode: 6x14 | Airdate: Dec 11, 1973
Episode: 6x15 | Airdate: Dec 18, 1973
Episode: 6x16 | Airdate: Jan 1, 1974
Episode: 6x17 | Airdate: Jan 8, 1974
Episode: 6x18 | Airdate: Jan 15, 1974
Episode: 6x19 | Airdate: Jan 22, 1974
Episode: 6x20 | Airdate: Jan 29, 1974
Episode: 6x21 | Airdate: Feb 5, 1974
Episode: 6x22 | Airdate: Feb 12, 1974
Episode: 6x23 | Airdate: Feb 19, 1974
Episode: 6x24 | Airdate: Feb 26, 1974
Episode: 7x01 | Airdate: Sep 10, 1974
Episode: 7x02 | Airdate: Sep 17, 1974
Episode: 7x03 | Airdate: Sep 24, 1974
Episode: 7x04 | Airdate: Oct 1, 1974
Episode: 7x05 | Airdate: Oct 8, 1974
Episode: 7x06 | Airdate: Oct 15, 1974
Episode: 7x07 | Airdate: Oct 22, 1974
Episode: 7x08 | Airdate: Oct 29, 1974
Episode: 7x09 | Airdate: Nov 12, 1974
Episode: 7x10 | Airdate: Nov 26, 1974
Episode: 7x11 | Airdate: Dec 3, 1974
Episode: 7x12 | Airdate: Dec 10, 1974
Episode: 7x13 | Airdate: Dec 31, 1974
Episode: 7x14 | Airdate: Jan 7, 1975
Episode: 7x15 | Airdate: Jan 14, 1975
Episode: 7x16 | Airdate: Jan 21, 1975
Episode: 7x17 | Airdate: Jan 28, 1975
Episode: 7x18 | Airdate: Feb 4, 1975
Episode: 7x19 | Airdate: Feb 11, 1975
Episode: 7x20 | Airdate: Feb 18, 1975
Episode: 7x21 | Airdate: Feb 25, 1975
Episode: 7x22 | Airdate: Mar 11, 1975
Episode: 7x23 | Airdate: Mar 18, 1975
Episode: 7x24 | Airdate: Mar 25, 1975
Episode: 8x01 | Airdate: Sep 12, 1975
Episode: 8x02 | Airdate: Sep 12, 1975
Episode: 8x03 | Airdate: Sep 19, 1975
Episode: 8x04 | Airdate: Sep 26, 1975
Episode: 8x05 | Airdate: Oct 3, 1975
Episode: 8x06 | Airdate: Oct 10, 1975
Episode: 8x07 | Airdate: Oct 17, 1975
Episode: 8x08 | Airdate: Oct 24, 1975
Episode: 8x09 | Airdate: Oct 31, 1975
Episode: 8x10 | Airdate: Nov 7, 1975
Episode: 8x11 | Airdate: Nov 14, 1975
Episode: 8x12 | Airdate: Nov 21, 1975
Episode: 8x13 | Airdate: Nov 28, 1975
Episode: 8x14 | Airdate: Dec 4, 1975
Episode: 8x15 | Airdate: Dec 11, 1975
When McGarrett suspects respected businessman and collector August March as working in a smuggling operation, he decides to set a trap to catch him in the act.
Episode: 8x16 | Airdate: Dec 18, 1975
Episode: 8x17 | Airdate: Jan 1, 1976
Episode: 8x18 | Airdate: Jan 8, 1976
Episode: 8x19 | Airdate: Jan 15, 1976
Episode: 8x20 | Airdate: Jan 29, 1976
Episode: 8x21 | Airdate: Feb 5, 1976
Episode: 8x22 | Airdate: Feb 12, 1976
Episode: 8x23 | Airdate: Feb 26, 1976
Episode: 8x24 | Airdate: Mar 4, 1976
Episode: 9x01 | Airdate: Sep 30, 1976
Episode: 9x02 | Airdate: Sep 30, 1976
Episode: 9x03 | Airdate: Oct 7, 1976
Episode: 9x04 | Airdate: Oct 14, 1976
Episode: 9x05 | Airdate: Oct 21, 1976
Episode: 9x06 | Airdate: Oct 28, 1976
Episode: 9x07 | Airdate: Nov 4, 1976
Episode: 9x08 | Airdate: Nov 11, 1976
Episode: 9x09 | Airdate: Nov 18, 1976
Episode: 9x10 | Airdate: Dec 2, 1976
Episode: 9x11 | Airdate: Dec 16, 1976
Episode: 9x12 | Airdate: Dec 23, 1976
Episode: 9x13 | Airdate: Jan 6, 1977
Episode: 9x14 | Airdate: Jan 13, 1977
Episode: 9x15 | Airdate: Jan 20, 1977
Episode: 9x16 | Airdate: Jan 27, 1977
Episode: 9x17 | Airdate: Feb 3, 1977
Episode: 9x18 | Airdate: Feb 17, 1977
Episode: 9x19 | Airdate: Feb 24, 1977
Episode: 9x20 | Airdate: Mar 3, 1977
Episode: 9x21 | Airdate: Mar 17, 1977
Episode: 9x22 | Airdate: Mar 24, 1977
Episode: 9x23 | Airdate: Mar 31, 1977
Episode: 9x24 | Airdate: May 5, 1977
Episode: 10x01 | Airdate: Sep 15, 1977
Episode: 10x02 | Airdate: Sep 22, 1977
Episode: 10x03 | Airdate: Sep 29, 1977
Episode: 10x04 | Airdate: Oct 13, 1977
Episode: 10x05 | Airdate: Oct 20, 1977
Episode: 10x06 | Airdate: Oct 27, 1977
Episode: 10x07 | Airdate: Nov 10, 1977
Episode: 10x08 | Airdate: Nov 17, 1977
Episode: 10x09 | Airdate: Dec 8, 1977
Episode: 10x10 | Airdate: Dec 22, 1977
Episode: 10x11 | Airdate: Dec 29, 1977
Episode: 10x12 | Airdate: Jan 5, 1978
Episode: 10x13 | Airdate: Jan 12, 1978
Episode: 10x14 | Airdate: Feb 2, 1978
Episode: 10x15 | Airdate: Feb 9, 1978
Episode: 10x16 | Airdate: Feb 16, 1978
Episode: 10x17 | Airdate: Mar 2, 1978
Episode: 10x18 | Airdate: Mar 9, 1978
Episode: 10x19 | Airdate: Mar 16, 1978
Episode: 10x20 | Airdate: Mar 23, 1978
Episode: 10x21 | Airdate: Mar 30, 1978
Episode: 10x22 | Airdate: Apr 13, 1978
Episode: 10x23 | Airdate: Apr 27, 1978
Episode: 10x24 | Airdate: May 4, 1978
Episode: 11x01 | Airdate: Sep 28, 1978
Episode: 11x02 | Airdate: Oct 5, 1978
Episode: 11x03 | Airdate: Oct 12, 1978
Episode: 11x04 | Airdate: Oct 19, 1978
Episode: 11x05 | Airdate: Oct 26, 1978
Episode: 11x06 | Airdate: Nov 9, 1978
Episode: 11x07 | Airdate: Nov 16, 1978
Episode: 11x08 | Airdate: Nov 23, 1978
Episode: 11x09 | Airdate: Nov 30, 1978
Episode: 11x10 | Airdate: Dec 14, 1978
Episode: 11x11 | Airdate: Dec 21, 1978
Episode: 11x12 | Airdate: Dec 28, 1978
Episode: 11x13 | Airdate: Jan 4, 1979
Episode: 11x14 | Airdate: Jan 18, 1979
Episode: 11x15 | Airdate: Jan 25, 1979
Episode: 11x16 | Airdate: Feb 8, 1979
Episode: 11x17 | Airdate: Feb 22, 1979
Episode: 11x18 | Airdate: Mar 1, 1979
Episode: 11x19 | Airdate: Mar 15, 1979
Episode: 11x20 | Airdate: Mar 22, 1979
Episode: 11x21 | Airdate: Apr 5, 1979
Episode: 11x22 | Airdate: Apr 5, 1979
Episode: 12x01 | Airdate: Oct 4, 1979
Episode: 12x02 | Airdate: Oct 4, 1979
Episode: 12x03 | Airdate: Oct 11, 1979
Episode: 12x04 | Airdate: Oct 18, 1979
Episode: 12x05 | Airdate: Oct 25, 1979
Episode: 12x06 | Airdate: Nov 1, 1979
Episode: 12x07 | Airdate: Nov 8, 1979
Episode: 12x08 | Airdate: Nov 29, 1979
Episode: 12x09 | Airdate: Dec 4, 1979
Episode: 12x10 | Airdate: Dec 11, 1979
Episode: 12x11 | Airdate: Dec 18, 1979
Episode: 12x12 | Airdate: Dec 25, 1979
Episode: 12x13 | Airdate: Jan 1, 1980
Episode: 12x14 | Airdate: Jan 8, 1980
A school for wayward girls, run by a friend of Steve McGarrett's, needs $15,000 for overdue taxes or the school will be closed. Former counterfeiter Willie McFee, a flower breeder who also is a general handyman and gardener for the school, decides to make one last print run with a set of near-perfect $20 plates he once crafted - but a mainland crime boss gets word that Willie's plates have surfaced, meaning that he can try to steal them for himself.
Episode: 12x15 | Airdate: Jan 15, 1980
The next-to-last show to be filmed features an escaped convict posing as a diplomat from a Far Eastern country in order to get at the country's store of gold bullion in a Honolulu bank. He hires experts with lasers to penetrate the light-beam screen surrounding the bank vault, burn a hole in the vault's floor, heat the gold until it liquefies and drain it through ceramic tubing. McGarrett gets a clue to what's happening when the bank's thermometer (located near the vault) starts to freak out, but he still has to find the thugs' hideout before they solidify the gold and escape.
Episode: 12x16 | Airdate: Mar 1, 1980
Using radio-controlled model airplanes, three college students engineer the theft of the Hawaiian crown jewels.
Episode: 12x17 | Airdate: Mar 8, 1980
Israel's celebrated Nazi-hunter Yuri Bloch has apparently been killed in Honolulu while trying to gather information about a war criminal named Emil Klaus. Knowing the Bloch would only have come to Hawaii if a former Nazi were hiding there, McGarrett and Five-O conduct their own search for Klaus -- while Bloch's partner lies badly wounded in a safe house, and the woman caring for him does what she can to assist while undercover.
Episode: 12x18 | Airdate: Mar 22, 1980
During a stop off on a bird-watching expedition, tourists photograph an old sugar mill. They don't know that the mill is a front for a gold-smuggling operation and that one of their photographs has caught the leader through a window. The leader sends a pack of goons to kill everyone in the tourist party and steal their film. McGarrett and a newspaper journalist, who got hold of the pictures, must try to identify the man in the picture and take down his operation before he gets them.
Episode: 12x19 | Airdate: Mar 29, 1980
Paul Burke guest stars as attorney David Lawrence, a political candidate whose promising bid for the U.S. Senate is endangered by the murder of a man who tried to blackmail him. Although Lawrence swears he knows nothing about the murder, he admits that the dead would-be extortionist did have knowledge about him that could have destroyed his political future.
Episode: 12x20 | Airdate: Apr 5, 1980
The series concludes with the final showdown between McGarrett and Wo Fat. Three scientists who have disappeared have one thing in common, they all attended a symposium on possible space-based, laser defense systems. McGarrett impersonates a fourth scientist, Dr. Elton Raintree, who attended the same gathering and is soon abducted. Wo Fat is behind it all and wants the scientists to complete their work and produce such a device.