Higgins is getting married and Magnum is hired by Diane Dupres who believes people are attempting to harm her.

Deirdre Dupres, Diane's twin sister, arrives and tells Magnum the truth about Diane.

Magnum is despondent over his loss of his wife Michelle, his father, Mac McReynolds and now Diane Dupres. While driving in Honolulu the next day, he sees a man who could be an identical twin for Mac McReynolds.

Garwood Huddle, an infamous 1940s bank robber, escapes from a Hawaiian prison and asks Magnum to help locate his grandson who has been kidnapped.

TC is returning from Molokai when he encounters engine problems and crashes into the water just before landing.

A psychic hires Magnum to investigate her murder.

Carol Baldwin, the assistant district attorney, hires Magnum to investigate a man who allegedly murdered his wife.

Magnum is teaching a class in private investigation at a local college and the class decides to find the missing fiancé of one of the students.

A 10-year-old Amerasian boy, who is in the country illegally, asks Magnum to help him find his father.

Robin Masters asks Magnum to track down an embezzler working in a local bank. Meanwhile, Higgins is being blackmailed and since Magnum is busy, he recruits Luther Gillis to help him find the blackmailer.

Magnum has been evicted from the guest house so that Betty Wyndom can write a mystery novel based on the character Sebastian Sabre.

A Robin Masters' sponsored jewelry design competition is being held at the estate with over $170 million worth of jewelry on display and the insurance company sends Krista Villeroch to check on the estate's security.

Higgins' cousin Sally arrives in Hawaii to get married and Higgins has a big surprise. Meanwhile, Magnum is helping Agatha recover $10,000 from a bankrupt investment.

Someone is harassing Assistant District Attorney Carol Baldwin and Magnum agrees to help her. Higgins is facing a reunion with his old Sandhurst classmates.

Magnum, TC, Rick and Higgins volunteer to go to Cambodia to rescue two Americans.

Magnum and Higgins are captured along with Tyler. Rick and TC rescue Magnum and the others, and a gun fight ensues. Freedom wins and everyone returns home.

Mac sells Rick an expensive boat crewed by three beautiful Japanese women.

Magnum is hired by a country and western singer who is looking for five songs written by his friend 30-years-ago.

Ms. Jones, the records clerk that Magnum always encounters, asks TM to find her missing husband.

World famous French detective Jean Claude Fornier arrives in Hawaii and asks Magnum to help him find a missing heir.

A Torah is stolen from a rabbi who is Higgins' friend and Magnum volunteers to help recover it.

Assistant District Attorney Carol Baldwin's 17-year-old cousin is missing and Carol asks Magnum to help find her.