Shows Like Magnum P.I.
If you loved Magnum P.I.'s Action & Adventure and Drama storytelling, these series deliver a similar experience — chosen for tone, narrative quality, and viewer satisfaction. Each includes where to stream it now.
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Magnum, P.I.
A private investigator who works when he wants, lives in a beachfront estate in Hawaii, drives a posh Ferrari, runs up an unlimited tab at a swank bar, and charms attractive women in peril - that's the lifestyle of Thomas Magnum, aka Magnum, P.I.

Hawaii Five-0
Steve McGarrett returns home to Oahu, in order to find his father's killer. The governor offers him the chance to run his own task force (Five-0). Steve's team is joined by Chin Ho Kelly, Danny "Danno" Williams, and Kono Kalakaua.

The Sweeney
Jack Regan, an unethical officer of the Flying Squad, uses unorthodox methods to pursue criminals with the help of his partner, George Carter.

Riptide
The cases of a private investigations agency run by two Vietnam War veterans and their computer geek friend from high school, armed with toughness, their own helicopter, and the third's technical ability.

Reacher
Jack Reacher, a veteran military police investigator, has just recently entered civilian life. Reacher is a drifter, carrying no phone and the barest of essentials as he travels the country and explores the nation he once served.

Almost Paradise
A former DEA agent forced into early retirement runs a gift shop in in the Philippines. Despite his best efforts to begin a tranquil new life, he’s pulled back into a world of dangerous people and deadly situations, either through his friends in the local police department or running into people from his old life. And the problem is: he likes it.

Mannix
Mannix is an American television detective series that ran from 1967 through 1975 on CBS. Created by Richard Levinson and William Link and developed by executive producer Bruce Geller, the title character, Joe Mannix, is a private investigator. He is played by Mike Connors. Mannix was the last series produced by Desilu Productions.

Hawaii Five-O
Hawaii Five-O is an American police procedural drama series produced by CBS Productions and Leonard Freeman. Set in Hawaii, the show originally aired for 12 seasons from 1968 to 1980, and continues in reruns. Jack Lord portrayed Detective Lieutenant Steve McGarrett, the head of a special state police task force which was based on an actual unit that existed under martial law in the 1940s. The theme music composed by Morton Stevens became especially popular. Many episodes would end with McGarrett instructing his subordinate to "Book 'em, Danno!", sometimes specifying a charge such as "murder one".
More Shows Like Magnum P.I.

Burn Notice
A formerly blacklisted spy uses his unique skills and training to help people in desperate situations.

NCIS: New Orleans
A drama about the local field office that investigates criminal cases affecting military personnel in The Big Easy, a city known for its music, entertainment and decadence.

Mission: Impossible
Mission: Impossible is an American television series that chronicles the missions of a team of secret American government agents known as the Impossible Missions Force. The show is a revival of the 1966 TV series of the same name. The only actor to return for the series as a regular cast member was Peter Graves who played Jim Phelps, although two other cast members from the original series returned as guest stars. The only other regular cast member to return for every episode was the voice of "The Tape", Bob Johnson.

The Terminal List
Navy SEAL Commander James Reece turns to vengeance as he investigates the mysterious forces behind the murder of his entire platoon. Free from the military’s command structure, Reece applies the lessons he’s learned from nearly two decades of warfare to hunt down the people responsible.

Marvel's The Punisher
A former Marine out to punish the criminals responsible for his family's murder finds himself ensnared in a military conspiracy.

The Equalizer
Robert McCall is a former agent of a secret government agency who is now running his own private crime fighting operation where he fashions himself as "The Equalizer." It is a service for victims of the system who have exhausted all possible means of seeking justice and have nowhere to go. McCall promises to even out the odds for them.

Lethal Weapon
A slightly unhinged former Navy SEAL lands a job as a police officer in Los Angeles where he's partnered with a veteran detective trying to keep maintain a low stress level in his life.

Tropical Heat
Tropical Heat is a Canadian action series The plot revolves around private investigator, ex-DEA agent Nick Slaughter who after arriving in the fictional resort town of Key Mariah, Florida and setting up a detective agency there, met up with local tourist agent Sylvie Girard to solve a variety of different cases.

Taken
The origin story of younger, hungrier, former Green Beret Bryan Mills as he deals with a personal tragedy that shakes his world. As he fights to overcome the incident and exact revenge, Mills is pulled into a career as a deadly CIA operative, a job that awakens his very particular, and very dangerous, set of skills.

Mission: Impossible
Mission: Impossible is an American television series that was created and initially produced by Bruce Geller. It chronicles the missions of a team of secret government agents known as the Impossible Missions Force. In the first season, the team is led by Dan Briggs, played by Steven Hill; Jim Phelps, played by Peter Graves, takes charge for the remaining seasons. A hallmark of the series shows Briggs or Phelps receiving his instructions on a recording that then self-destructs, followed by the theme music composed by Lalo Schifrin. The series aired on the CBS network from September 1966 to March 1973, then returned to television for two seasons on ABC, from 1988 to 1990, retaining only Graves in the cast. It later inspired a popular series of theatrical motion pictures starring Tom Cruise, beginning in 1996.

Scarecrow and Mrs. King
Scarecrow and Mrs. King is an American television series that aired from October 3, 1983, to May 28, 1987 on CBS. The show stars Kate Jackson and Bruce Boxleitner as divorced housewife Amanda King and top-level "Agency" operative Lee Stetson who begin a strange association, and eventual romance, after encountering one another in a train station.
Why These Shows Are Similar
These recommendations share core qualities with Magnum P.I. (2018): Action & Adventure and Drama themes, similar pacing, and comparable production quality. NoBadPicks uses TMDB collaborative filtering, genre matching, and AI analysis to surface series most likely to resonate with fans of Magnum P.I..
See full details for Magnum P.I. (2018)
