Season 1 is the first season of reboot series Magnum P.I.  It was announced on May 11, 2018 and was premiered on September 24, 2018 and concluded on April 1, 2019. There are 20 episodes.

On October 19, 2018, CBS ordered more episodes, bringing Season 1 to a full 20-episode season.

On January 31, 2019, CBS gave Magnum P.I. an early renewal along with two other series. Its episode number and premiere date for Season 2 remain unknown at this point in time.

Episodes Edit

Title Written by Directed by Original air date Production code Viewers (million)
I Saw the Sun Rise Peter M. Lenkov & Eric Guggenheim Justin Lin September 24, 2018 101 8.12
S1E1 A charming rogue, an American hero and a die-hard Detroit Tigers fan, Magnum lives in a guest cottage on Robin’s Nest, the luxurious estate where he works as a security consultant to supplement his P.I. business. The "majordomo" of the property is Juliet Higgins, a beautiful and commanding disavowed MI:6 agent whose second job is to keep Magnum in line, with the help of her two Dobermans. When Magnum needs back-up on a job, he turns to his trusted buddies and fellow POW survivors, Theodore "TC" Calvin, a former Marine chopper pilot who runs Island Hoppers, a helicopter tour business, and Orville "Rick" Wright, a former Marine door-gunner-turned-impresario of Oahu's coolest nightclub and the most connected man on the island. Suspicious of Magnum’s casual attitude and presence at his crime scenes, Detective Gordon Katsumoto finds that he and Magnum are more alike than either of them care to admit. With keys to a vintage Ferrari in one hand, aviator sunglasses in the other, and an Old Düsseldorf longneck chilling in the fridge, Thomas Magnum is back on the case!
From the Head Down Peter M. Lenkov & Eric Guggenheim Karen Gaviola October 1, 2018 102 6.23
S1E2 Magnum helps Dan for a struggling fisherman and fellow veteran, when his 300-pound tuna worth $350,000 is stolen, and he discovers that the thief needs Magnu's help as well.
The Woman Who Never Died Joe Gazzam Sylvain White October 8, 2018 103 6.08
S1E3 Magnum takes a case from fellow private investigator Luther Gillis to find the true identity of a man's comatose fiancée when he learns that she’s had extensive facial surgery,
Six Paintings, One Frame Ashley Gable Antonio Negret October 15, 2018 104 5.48
S1E4 A close friend of Higgins, an art connoisseur who recently hired Magnum to test his security, is murdered, and Thomas is arrested as the main suspect.
Sudden Death David Fury David Grossman October 22, 2018 105 5.63
S1E5 TC asks Magnum to take on a case to help acquit the father of one of his young football players who is accused of murder.
Death Is Only Temporary Gene Hong & Scarlett Lacey Duane Clark October 29, 2018 106 5.69
S1E6 An aging tycoon, Henry Brown asks Magnum to find his lost love who he says just recently contacted him – the only problem is she died 30 years ago. Also, Rick and TC meet a fellow vet who is having a hard time adjusting to civilian life.
The Cat Who Cried Wolf Neil Tolkin Eagle Egilsson November 5, 2018 107 5.27
S1E7 Magnum takes the case of a little girl's missing cat and, in the process, stumbles upon another cat’s murdered owner who happens to be an FBI agent.
Die He Said Joe Gazzam Peter Weller November 12, 2018 108 5.50
S1E8 A man dying of lymphoma hires Magnum to find his estranged, bone-marrow-compatible brother who turns out to need Magnum's help as well. Also, Magnum's case brings back haunted memories for the guys of a past SEAL team mission that went sideways.
The Ties That Bind Ashley Gable Ron Underwood November 19, 2018 109 5.39
S1E9 After a 16-year-old kidnap victim, Amanda (Lyrica Okano), escapes her captors, her parents hire Magnum, who experienced similar trauma as a POW, to find who took her.
Bad Day to Be a Hero Ashley Charbonnet Lin Oedeng December 10, 2018 110 5.47
S1E10 Magnum must help Rick's crush, Toni after her illegal poker game, organized to pay back a mob debt, is robbed by masked gunmen
Nowhere to Hide Peter M. Lenkov (Story), Joe Gazzam (Teleplay) Mark Tinker January 14, 2019 111 6.02
S1E11 As Magnum helps a woman find her missing cousin, Sergei is a Russian fugitive, Higgins' and Kumu's lives are put in danger when they get too close to the case.
Winner Takes All Gene Hong Amanda Marsalis January 20, 2019 112 8.76
S1E12 Magnum has an emotional connection to a case when he and every other private investigator and bounty hunter on Oahu are tasked to track down a man accused of murder.
Day of the Viper David Fury (Story), Gene Hong & Eric Guggenheim (Teleplay) Bryan Spicer January 21, 2019 113 5.33
S1E13 Magnum and Higgins are shocked when one of her former MI6 teammates shows up with a fresh gunshot wound and news that "the Viper," the assassin who killed Higgins' true love, has surfaced on Oahu. Also, while Magnum's busy helping Higgins track down the Viper, he asks Rick to take over a case, a task that Rick relishes until it goes sideways.
I, The Deceased Scarlett Lacey Krishna Rao January 28, 2019 114 5.69
S1E14 Magnum investigates the murder of a man who, pre-death, hires Thomas to find his killer. Also, Kumu reconnects with an old friend.
Day the Past Came Back Peter M. Lenkov & Eric Guggenheim Bryan Spicer February 18, 2019 115 5.97
S1E15 After Magnum is kidnapped, he discovers that Hannah Magnum's ex who landed him and his friends in the POW camp, is on the island and planning to steal a fortune in gold.
Murder is Never Quiet Barbie Kligman David Straiton February 25, 2019 116 6.29
S1E16 Magnum is hired by a woman to prove that her son didn't kill his girlfriend and has only 24 hours to do so before the accused accepts a plea deal. Also, Rick and TC try to recover stolen appliances that were donated to a wounded veteran.
Black is the Widow Neil Tolkin Kristin Windell March 4, 2019 117 5.61
S1E17 After a man is murdered, Magnum poses as a doctor on the same dating app the victim was using in order to find the killer who may be praying on wealthy men.
A Kiss Before Dying Barbie Kligman & Ashley Charbonnet Bryan Spicer March 11, 2019 118 6.05
S1E18 When the Dobermans dig up what appears to be a human bone, Magnum and Higgins help Katsumoto investigate the murder of his former mentor.
Blood in the Water Gene Hong Karen Gaviola March 25, 2019 119 5.74
S1E19 When Magnum and Higgins get "yacht-jacked," Higgins is 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.
The Day It All Came Together Peter M. Lenkov & Eric Guggenheim Bryan Spicer April 1, 2019 120 5.54
S1E20 Hannah who is Magnum's ex and the fugitive responsible for him and his SEAL team brothers being POWs for years, shows up at his home with a gunshot wound, and wanting his help to find her missing CIA father whose life is in danger. Also, Magnum makes an earnest proposition to Higgins for her to become his private investigations partner.

Cast Edit


Recurring Edit

Guest Edit

Trivia Edit

  • The series was ordered on May 11, 2018 for a reboot series.
  • It was scheduled to premiered on September 24, 2018 on Mondays at 9:00 PM (after Happy Together).
  • The season was initially set to run for 13 episodes, however, on October 19, 2018, CBS ordered a full 20-episode season.
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