Currently available on 2 streaming services.

Streaming, rent, or buy Magnum, P.I. – Season 4:

You are able to buy "Magnum, P.I. - Season 4" on Apple TV, Microsoft Store as download.

Where can I watch Magnum, P.I. for free?

There are no options to watch Magnum, P.I. for free online today in Australia. You can select 'Free' and hit the notification bell to be notified when season is available to watch for free on streaming services and TV.

If you’re interested in streaming other free movies and TV shows online today, you can:

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Cast

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