Magnum, P.I. Wiki

Season 4 is the fourth season of Magnum P.I.. It was confirmed on April 15, 2021. It was premiered on October 1, 2021.






  • On April 15, 2021, the series was renewed for a fourth season alongside with NCIS, Blue Bloods, Bull and S.W.A.T..[1]
  • The series would set to film in Oahu in early September 2021[2]
  • On May 19, 2021, the series has remain schedule on Friday at 9:00PM/8:00PM after S.W.A.T..[3]
  • The season is set to premiere on October 1, 2021.[4]
  • Chantal Thuy is now billed as also starring from 4x01 onwards.[5]


Title Written by Directed by Original air date Production code
Island Vibes Eric Guggenheim & Gene Hong Bryan Spicer October 1, 2021 401
S4E1.jpg As Magnum tries to keep his new relationship a secret and handles cases solo while Higgins is away, he is tasked with finding a single mom being hunted by two very dangerous gangs. Also, while Higgins is abroad with Ethan, a misstep forces her to assist an old employer, and Rick gets some bad, but also very, very good news.
The Harder They Fall David Wolkove Doug Hannah October 8, 2021 402
S4E2.jpg While Magnum and Higgins reunite and work the case of a construction worker’s tragic death, TC and Shammy get skyjacked by a pair of drug runners posing as tourists.
Texas Wedge Gene Hong Antonio Negret October 15, 2021 403
S4E3.jpg Magnum, Higgins and Rick go undercover at a ritzy country club when a young caddie is fired after being accused of stealing a member’s golf clubs. Also, Jin's niece, unaware of her uncle's shady past, asks him to speak at her school.
Those We Leave Behind Barbie Kligman Allison Liddi-Brown October 22, 2021 404
S4E4.jpg While Dennis Katsumoto is driving with his mother, the two are carjacked and Dennis is critically injured when his head hits the pavement. Higgins brings Magnum a case of a teenage girl who committed suicide, not telling him she got the case while seeing a therapist, as the therapist strongly feels the girl was not suicidal. While working the case, Magnum and Higgins are also able to help Gordon locate the carjackers who hurt his son. Dennis has successful surgery to repair a brain bleed.
Til Death Katie Varney Eagle Egilsson November 5, 2021 405
S4E5.jpg When Magnum and Higgins are hired by an anxious groom to look into his bride-to-be on the eve of their wedding, what they think is a simple case of cold feet turns into a web of lies and a life-or-death situation for Higgins. Also, TC makes a touching decision on how to help Cade.
Devil On The Doorstep Tera Tolentino Claudia Yarmy November 12, 2021 406
S4E6.jpg A journalist hires Magnum to track down his anonymous source after they mysteriously go dark, and Higgins receives a new assignment from MI-6. Also, Rick's old friend comes to the island, but TC is suspicious of his motives.
A New Lease On Death Barbie Kilgman (story/teleplay) & Zachary Knighton (story) Rubba Nada November 19, 2021 407
S4E7.jpg When Rick is asked to assist with a federal investigation of his childhood friend Robbie, Magnum launches his own investigation to see what the Feds really have on him Also, Kumu goes undercover in a retirement community when Higgins is hired to investigate the disappearance of a resident’s life savings.
A Fire in the Ashes David Slack Lisa Robinson December 3, 2021 408
S4E8.jpg Magnum starts following Higgins to discover what she’s been hiding, as she’s secretly assigned to infiltrate a group threatening to take down MI-6. Also, Rick struggles after an explosion takes the life of someone important to him.
Better Watch Out December 10, 2021 409
S4E9.jpg A Christmas Eve ransomware attack on the Honolulu Police Department forces Lia to reveal a family secret to Magnum and Katsumoto.


  Seasons of Magnum, P.I. (2018)
Season 1Season 2Season 3Season 4