Magnum is in Los Angeles serving a writ when he meets a woman who is later murdered. Magnum sets out to find the killer and possibly finds his soulmate.

A deaf woman witnesses a bank robbery where four people are murdered. Magnum agrees to act as her bodyguard after the murderer is released on bail.

Lesley, the prostitute Magnum met while working as a hotel detective, is back and she asks Thomas for help in finding her sister.

Magnum is being awarded the Local PI Of The Year Award when the presenter, French detective Jean Claude Fornier, collapses and dies. Thomas, aided by several other PIs, sets out to find the murderer.

A psycho killer calls Magnum and gives him clues to the next victim.

Michelle, Magnum's wife, is back and she asks Thomas to take care of her daughter.

Magnum and Higgins engage in an all out prank war leading to Magnum finally accusing Higgins of being Robin Masters.

Jessica Fletcher helps Magnum investigate an attempt on the life of Higgins and several guests.

Magnum saves the life of a native Hawaiian girl who witnesses a hit. Wounded in the getaway, Magnum is nursed back to health on the forbidden island of Kapu.

T.C. faces his worst nightmare when his daughter is kidnapped.

Magnum helps Carol investigate whether her mentor, Judge Hannibal Kearns, is in trouble. Rick plans a birthday party for Icepick.

Higgins takes three boys from a juvenile jail on a survivalist weekend on a deserted island.

1940's Magnum investigates the murder of a newspaper publisher in a classic whodunit mystery.

Magnum's attempts to secure a pilot's license in order to land a job in Oklahoma are put on hold when T.C. is shot, and it turns out that the bullet was meant for Magnum.

Magnum goes on a soul-searching trek after a being terminated from a case he couldn't solve. His trip leads him to the top of a mountain where he spotted an old plane crash from WWII, only to be pinned under the fuselage, leg bleeding, and trying to keep from going delirious when he can't free himself.

Magnum's 40th birthday is approaching and he is hired to locate a Chinese gang "shaking down" local merchants.

Sgt. Michael Doheny (Frank Sinatra), a retired New York cop, learns that his beloved granddaughter was kidnapped and murdered by incredibly vicious sexual predators during his retirement celebration. Sgt. Doheny eventually tracks the two killers to Hawaii and enlists Magnum's help without telling him why he wants to find the men. One of the killers flees Doheny and is run over by a bus. In a quiet, intense way, Doheny describes the killing to Magnum and makes it perfectly clear that he will kill the other murderer if he finds him, no matter what the circumstances. Magnum goes along hoping to find the killer first and spare Doheny from a murder rap.

Cynthia Farrell, the woman Magnum fell in love with while in Los Angeles, is visiting but Thomas is involved with Andrea who claims that someone is going to kill her.

Magnum's favorite aunt, famous playwright Phoebe Sullivan, comes to Hawaii and asks Thomas to protect her from someone trying to kill her.

Rick confesses and is jailed for the murder of a "hit man."

Magnum is shot in a warehouse and is left for dead. He then "sees" but cannot communicate with Higgins, Rick, TC, Carol, Michelle, et al.