Magnum and Higgins consider the potential complications of a deeper connection. Rick grapples with the demands of fatherhood alongside the responsibilities of La Mariana. Katsumoto contemplates his future course of action.

To unravel a murder, Magnum and Higgins assume the guise of lifeguards, immersing themselves in the world of sun and surf. Meanwhile, Jin Jeong, after securing a storage unit at auction, discovers a missing military medal and calls upon the…

Katsumoto accepts a position guarding a globally renowned K-pop idol. Meanwhile, Higgins and Rick face danger as they attempt to assist a friend of Rick’s. Elsewhere, Magnum nurses doubts regarding the circumstances of Captain Greene’s demi…

At Magnum & Higgins, a search is underway for a Chief Executive Officer who has quite inexplicably disappeared. Meanwhile, Rick prepares himself for a visit from his spirited and unpredictable younger sister, Ruthie.

When a tourist vanishes without a trace, Magnum calls upon Katsumoto for assistance. Meanwhile, Higgins and Kumu investigate the suspicious death of a cherished canine companion. And when Rick inadvertently misplaces Magnum’s beloved pet mo…

The day of Katsumoto’s hearing has come, the moment determining whether his career in law enforcement will conclude. Meanwhile, Magnum and Higgins are engaged to investigate a man their client alleges is a murderer. A growing unease settles…

Magnum and Higgins are called upon to investigate the theft from an elderly gentleman afflicted with Alzheimer's disease. Meanwhile, the ohana works to assist TC in confronting a painful event from their history.

In the Captain Greene investigation, Magnum and Rick uncover a startling revelation. Meanwhile, Higgins and TC journey to Maui, tasked with assisting an unusual billionaire in tracking down the owner of a persistent drone that has been caus…

Magnum and Higgins find themselves embroiled in a case that requires Higgins to enter a psychiatric facility. Meanwhile, Katsumoto and his son, Dennis, embark on a college tour on the mainland, but their journey takes a dangerous turn when …

An armed team lays siege to Robin's Nest. TC sustains serious injuries as Rick fights desperately for survival. Mid-Season Finale.

Magnum and Higgins accepted a case for a client whose reputation was as murky as their intentions. Meanwhile, Kumu and Shammy assisted in transferring TC to a rehabilitation center for veterans. Elsewhere, Rick engaged in lighthearted bante…

Magnum and Higgins endeavor to assist Zhao, a dear friend of Kumu's, in reclaiming her life savings, vanished as the victim of a fraudulent scheme. Meanwhile, TC finds himself increasingly disheartened by the stalled progress of his own rec…

Magnum and Higgins seek out Katsumoto’s expertise when a chef vanishes from a prestigious restaurant. Meanwhile, Kumu collaborates with Cade at the Cultural Center, grappling with a painful period in American history: the forced internment …

Driven by a desperate hope, Magnum and Rick pursue a missing witness whose testimony could prove the innocence of a man wrongly accused of murder. Meanwhile, TC navigates the complexities of rebuilding his connection with Mahina following h…

Magnum and Higgins are engaged to locate a missing gamer, a young man whose online companions fear he may be in peril. Meanwhile, Jin Jeong seeks out TC's assistance in a pursuit of hidden riches following the release of his former associat…

Magnum and Higgins concur to assist a young Amish man who has journeyed to Hawaii in pursuit of his sister, who has fled her home. Meanwhile, Rick embarks on a quest to secure a date for TC to the Marine Corps Ball.

When a crucial homicide trial unravels in court, Katsumoto enlists Magnum's assistance to prevent a killer from escaping justice. Meanwhile, Higgins lends a hand to Jin Jeong, who finds himself embroiled in a perplexing mystery of his own.

At the request of a dean at the University of Oahu, Magnum and Higgins undertake a discreet inquiry into a professor implicated in an improper relationship with a graduate student. Meanwhile, TC and Katsumoto arrange a camping excursion for…

At the behest of TC and Mahina, Magnum and Higgins revisit a deadly arson case, their renewed scrutiny uncovering a disturbing truth. Meanwhile, Kumu offers his assistance to Rick at a veterans' crisis hotline.

Magnum and Higgins experience a significant development in their partnership. Simultaneously, lingering shadows from the past resurface when a former suspect seeks their counsel. TC sets his sights on expanding Island Hoppers. Rick finds hi…