2 seasons available
A pickpocket asks Magnum for help when a cellphone he recently lifted receives a very suspicious text message; Magnum is frustrated when Higgins won't answer him about whether she will become his partner; Rick decides to make a bold career move.
Mercenaries storm the estate in order to find out the true identity of the White Knight, Robin's muse and literary hero; Rick and TC help one of Rick's employees when his car is stolen; Higgins finally answers about becoming Magnum's partner.
Magnum and Higgins go undercover as a couple on a romantic bus tour; a lovebird on the trip is murdered and evidence is quickly deteriorating in the Hawaiian heat; TC is shaken when he runs into his ex-girlfriend.
Magnum and Higgins learn that the assassin who killed Higgins' true love has surfaced on Oahu; while Magnum is busy helping Higgins, he asks Rick to take over a case, a task that Rick relishes until it goes sideways.
Magnum investigates the murder of a man who, pre-death, hires Thomas to find his killer; Kumu reconnects with an old friend.
When the Dobermans dig up what appears to be a human bone, Magnum and Higgins help Katsumoto investigate the murder of his former mentor.
When Magnum and Higgins get "yacht-jacked," Higgins gets shot, and she and Magnum are stranded at sea, struggling to reach land before she bleeds out and the culprits return to finish them off.
Magnum's ex shows up at his home with a gunshot wound, wanting his help to find her missing CIA father whose life is in danger; Magnum makes an earnest proposition to Higgins for her to become his private investigations partner.