Jay Hernandez stars as Thomas Magnum, with Perdita Weeks as Juliet Higgins and Stephen Hill as TC in the 2018 reboot of Magnum, P.i. on Sky Witness.
Main cast
- Thomas MagnumJay Hernandez1–5Main
- Juliet HigginsPerdita Weeks1–5Main
- Theodore ‘TC’ CalvinStephen Hill1–5Main
- Orville ‘Rick’ WrightZachary Knighton1–5Main
- Kumu TuiletaAmy Hill1–5Main
- Gordon KatsumotoTim Kang1–5Main
Supporting cast
- Dr. Ethan ShahJay Ali2–4Supp
- Lia KaleoBetsy Phillips3–5Supp
- NoahKimee Balmilero1–5Supp
Guest & voice
- IvanChristopher Thornton1Guest
- NuzoVladimir Versailles1Guest
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About this cast
The 2018 reboot of Magnum, P.I. follows private investigator Thomas Magnum (Jay Hernandez) as he solves cases in Hawaii with his team. The series aired on CBS in the US and on Sky Witness in the UK, running for five seasons until 2024.
FAQs
Who plays Thomas Magnum in Magnum, P.I.?
Jay Hernandez plays Thomas Magnum in the 2018 reboot of Magnum, P.I.
Is the 2018 Magnum, P.I. a direct sequel to the original series?
No, it is a reboot with a new cast and updated storylines, though it shares the same Hawaiian setting and premise.
How many seasons of Magnum, P.I. are there?
The series ran for five seasons, from 2018 to 2024.
Where can I watch Magnum, P.I. in the UK?
The series aired on Sky Witness and is available on streaming services like NOW and Amazon Prime Video.
Sources & where to watch: IMDb · Wikipedia · Where to watch (JustWatch UK) · Updated June 2026