Magnum, P.I.
I Witness
TV Flash files “I Witness” as the last listed hour of season 4 — Magnum, P.I. (1980–1988) on CBS, season 4, episode 21, aired 1984-05-03, 60 min.
From the desk
How this hour is filed
This leaf is S04E21: listed hour 84 of 162 in the Magnum, P.I. guide, last listed hour of season 4. It aired 1984-05-03 (60 min). The listed hour before it is “Dream a Little Dream” (S04E20). Next is “Echoes of the Mind (1)” (S05E01).

Catalog log
Broadcast listing — not a TV Flash recap.
When the Kimg Kamehameha Club is robbed by thieves wearing animal masks, the three principal eyewitnesses have different stories about what happened and how their heroic skills saved the day from complete disaster. Now Magnum must go by instinct to figure out what is fact and what is fiction before the armed thugs strike again.
Viewer FAQ
Where does I Witness sit in the Magnum, P.I. guide?
S04E21 is listed hour 84 of 162 — last listed hour of season 4, season 4 episode 21.
When did Magnum, P.I. S04E21 air?
I Witness aired 1984-05-03 and is listed at 60 minutes.
Where should I start?
The two-hour premiere is the fantasy contract: estate, Ferrari, grin. Then jump to the hours that let Vietnam and the ensemble carry the argument. You will know within two episodes whether you want the cases or the bruised heart.
In the series
Why this series still plays
Watch it for the double exposure: Hawaiian PI pleasure on the surface, veteran friendship and unfinished war underneath. Selleck sells the grin; the hours that last are the ones that let the grin fail without sinking the show.
The Ferrari is a punchline that photographs like a wish. Tom Selleck slides into frame with a mustache the network could have trademarked, a guest house on someone else’s estate, and a private-investigator premise built to sell Hawaii to the mainland. That is the surface contract of Magnum, P.I., and it is not a small one. Donald P. Bellisario and Glen A. Larson knew how to package adventure. The cut, when it is honest, keeps introducing a second show: three veterans whose jokes are a coping system, a butler who…
Filed against
- Tom Selleck as Thomas Magnum
Tom Selleck’s Magnum made Ferrari daydreams and Vietnam ghosts into 1980s appointment TV on Magnum, P.I. — mustache-as-brand, Hawaiian sun as plot armor, eight seasons of charm with a bruised structure underneath. Reboots chase the…
- John Hillerman as Jonathan Quayle Higgins III
John Hillerman’s Jonathan Quayle Higgins III is Magnum, P.I.’s foil as class structure: British rectitude versus the man living in the guest house. Hawaiian daydream on the surface, estate rules underneath. On TV Flash he is the butler…
- Roger E. Mosley as Theodore "T.C." Calvin
Roger E. Mosley’s Theodore “T.C.” Calvin is Magnum, P.I.’s war under the Hawaiian sun — chopper, friendship, the argument that Vietnam did not end at the airport. Tom Selleck sold the grin; T.C. and Rick made the grin a unit. TV Flash…
- Larry Manetti as Orville "Rick" Wright
Larry Manetti’s Orville “Rick” Wright is Magnum, P.I.’s club-and-friendship argument — Hawaiian daydream on the surface, Vietnam unfinished underneath. Not a disposable sidekick; one-third of the veteran joke that is also a coping system.…