As of July 2026, Magnum, P.I. Season 4 aired in 1983 with 21 episodes — streaming now on ITVX Premium. Full episode guide and where to watch below.
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Magnum, P.I. Season 4

1983 21 Episodes Crime · Drama ⭐ 7/10

Magnum, P.I. Season 4 has quietly become one of the more dependable crime dramas currently available on . A compact run that never overstays its welcome. A 7/10 rating says what the writing already makes obvious: this one works. Watch Tom Selleck work — the performance is a masterclass in restraint. Available now — press play and find out why people keep recommending it.

Magnum, P.I. Season 4 arrived without much fanfare and built its audience the hard way — through word of mouth. At its heart, Magnum, P.I. Season 4 understands what makes crime drama work — character first, plot second. Season 4 of Magnum, P.I. Includes 21 episodes. It aired from September 1983 to May 1984. Tom Selleck and John Hillerman lead a cast that brings real weight to the material. It was aired in 1983. What makes Magnum, P.I. Season 4 hold up is that the resolution matters less than how the characters get there. It knows exactly what it is, and does not try to be anything else.

For anyone who wants their crime drama to earn its twists, Magnum, P.I. Season 4 delivers. It does not lean on comparisons to make its case. Best experienced as a single, sustained watch if your schedule allows. Tom Selleck carries scenes that would sink a lesser production. The resolution feels inevitable rather than arbitrary, which is rarer than it sounds.

📡 Where to Watch Magnum, P.I. Season 4

🇬🇧 United Kingdom
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🎬 Magnum, P.I. Season 4 — Episode Guide

E1
Home from the Sea
1983-09-29
Magnum is caught in a treacherous current when his surf ski is capsized miles from shore with near disastrous results.
E2
Luther Gillis: File #521
1983-10-06
Magnum joins forces with a hard-nosed private eye from St. Louis whey they find themselves investigating the same case but from opposite ends of the spectrum.
E3
Smaller Than Life
1983-10-13
Magnum and Rick discover that trouble comes in all shapes and sizes.
E4
Distant Relative
1983-10-20
Magnum does not count on murder when he chaperones Rick's convent-school sister on a night on the town.
E5
Limited Engagement
1983-11-03
Hired to investigate a strange series of robberies, Magnum's gallantry comes to the fore when two seemingly helpless, but independent elderly ladies are involved in an accident.
E6
Letter to a Duchess
1983-11-10
A flowery note of admiration from Higgins to a titles English woman, traveling the Islands incognito, is mistakenly attributed to Magnum.
E7
Squeeze Play
1983-11-17
Robin's Nest may be lost to Magnum and Higgins unless the local softball team can beat high-powered tycoon Buzz Benoit's players.
E8
A Sense of Debt
1983-12-01
TC puts life and limb on the line when he enters the boxing ring to repay an old debt.
E9
The Look
1983-12-08
Saigon's most popular disc jockey arrives in Honolulu and Magnum discovers she is the victim of vicious phone calls and threats.
E10
Operation: Silent Night
1983-12-15
Magnum, Rick, Higgins and TC spend an unexpected Christmas Eve on a remote island used by the military for gunnery practice.
E11
Jororo Farewell
1984-01-05
Magnum befriends the young Prince of Jororo who is the target of terrorists.
E12
The Case of the Red Faced Thespian
1984-01-19
Magnum must utilize his deductive powers when a lavish costume party becomes the scene of a baffling murder.
E13
No More Mr. Nice Guy
1984-01-26
Magnum and Higgins' friend, Carol - now a Deputy District Attorney - cons them into helping her set up a sting operation.
E14
Rembrandt's Girl
1984-02-02
Susan Johnson (played by Carol Burnett) is a bank teller who, desperate to hire Magnum, locks the two of them in a time-released bank vault.
E15
Paradise Blues
1984-02-09
An old friend from Magnum and TC's Vietnam days turns up in Hawaii asking for their help.
E16
The Return of Luther Gillis
1984-02-16
Magnum finds himself working with anachronistic gumshoe Luther Gillis again after someone kidnaps Higgins and Luther's secretary.
E17
Let the Punishment Fit the Crime
1984-02-23
A young woman who persuades Magnum to look for her brother also finagles a role in Higgins' musical production for a visiting British politician.
E18
Holmes Is Where the Heart Is
1984-03-08
A former British secret agent and old friend of Higgins arrives in Honolulu imagining himself as Sherlock Holmes.
E19
On Face Value
1984-03-15
A freak accident, occurring while Magnum is in hot pursuit of suspects causes traumatic injuries for an innocent bystander.
E20
Dream a Little Dream
1984-03-29
Magnum has feelings of déjà vu when he meets a young woman, who is a contestant in a Surf-Out held on Hawaii's North Shore.

🎭 Cast of Magnum, P.I. Season 4

Tom Selleck
Tom Selleck
Thomas Magnum
John Hillerman
John Hillerman
Jonathan Higgins
Roger E. Mosley
Roger E. Mosley
Terry 'TC' Calvin
Larry Manetti
Larry Manetti
Rick Wright

📋 All Seasons of Magnum, P.I.

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