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Magnum and Higgins take a major step forward in their relationship; at the same time, the past comes back to haunt them when a previous suspect becomes their client; TC aims to scale up Island Hoppers; Rick gets a new business partner.

Magnum P.I.

The Big Squeeze

Magnum and Higgins reexamine a fatal arson investigation at the request of TC and Mahina, leading to a sinister discovery; Kumu volunteers with Rick at a veterans' crisis call center.

Ashes to Ashes

Magnum and Higgins are hired by a University of Oahu dean to quietly investigate a professor who has been accused of having an inappropriate relationship with a female grad student; TC and Katsumoto take Cade and Dennis on a father-son camping trip.

Extracurricular Activities

After a high-stakes homicide case falls apart at trial, Katsumoto asks Magnum to help him stop a killer from walking free; Higgins helps Jin Jeong with a mystery of his own.

Consciousness of Guilt

Magnum and Higgins agree to help a teenage Amish boy who has traveled to Hawaii in search of his runaway sister; Rick sets out to find TC a date to the Marine Corps Ball.

Run With the Devil

Magnum and Higgins are hired to find a missing gamer whose online friends believe he might be in trouble; Jin Jeong enlists the help of TC in a treasure hunt after his ex-partner gets out of prison.

The Retrieval

Magnum and Rick race to find a missing witness who can exonerate an innocent man accused of murder; TC tries to repair his relationship with Mahina after being released from the VA.

Night Has a Thousand Eyes

Magnum and Higgins enlist Katsumoto to go under cover when a high-end restaurant chef goes missing; Kumu works with Cade at the cultural center, confronting America's dark chapter of the internment of Japanese Americans in the wake of Pearl Harbor.

Appetite for Danger

Magnum and Higgins try to help Zhao, a close friend of Kumu, recover her life savings that were all lost to a scammer; TC becomes increasingly frustrated at the lack of progress in his recovery and pushes everyone away.

Three Bridges

Magnum and Higgins go to work for a dangerous and controversial client; Kumu and Shammy help move TC to a veterans' rehab facility; Rick flirts with a woman who works at the marina.

Hit and Run

An armed hit team lays siege on Robin's Nest; someone from the past resurfaces, leaving Magnum and the rest shocked; TC is badly injured; Rick fights for his life when his assailants toy with him.

Charlie Foxtrot

Magnum and Higgins take on a case that sends Higgins inside a psychiatric hospital; Katsumoto and his son, Dennis, head to the mainland to look at colleges, but their trip takes a harrowing turn when a run-in with a local turns ugly.

Out of Sight, Out of Mind

A former Navy SEAL works as a private investigator in Hawaii, solving cases with his ex-MI6 partner and his trusted buddies who always show up to lend a helping hand, or a helicopter, when he needs backup.

S5 E11 | Hit and Run

E20 | The Big Squeeze

E19 | Ashes to Ashes

E18 | Extracurricular Activities

E17 | Consciousness of Guilt

E16 | Run With the Devil

E15 | The Retrieval

E14 | Night Has a Thousand Eyes

E13 | Appetite for Danger

E12 | Three Bridges

E11 | Hit and Run

E10 | Charlie Foxtrot

E9 | Out of Sight, Out of Mind