3 seasons available
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.
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.
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.
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.
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.
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.
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.
When Jin learns that an innocent woman is the target of a deadly hit, he asks Magnum and Higgins to help save her.
A decorated former Navy SEAL returns home from Afghanistan and repurposes his military skills to become a private investigator in Hawaii.
Magnum helps a struggling fisherman and fellow veteran when his 300-pound tuna worth $350,000 is stolen, only to learn that the thief needs Magnum's help as well.
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.
An art connoisseur and close friend of Higgins who recently hired Magnum to test his security is murdered, and Thomas is arrested as the main suspect.
TC asks Magnum to take on a case to help acquit the father of one of TC's young football players who is accused of murder.
An aging tycoon asks Magnum to find his lost love, who he says just recently contacted him -- but she died 30 years earlier; Rick and TC meet a fellow vet who is having a hard time adjusting to civilian life.
When Magnum takes the case of a little girl's missing cat, he stumbles upon another cat's murdered owner.
A dying man hires Magnum to find his estranged bone marrow-compatible brother; Magnum's case brings back memories of a past SEAL team mission that went sideways.
After a 16-year-old kidnap victim escapes her captors, her parents hire Magnum, who experienced similar trauma as a POW, to find who took her.
Magnum must help Rick's crush after her illegal poker game is robbed by masked gunmen, and she is on the hook with the mob for the stolen money.
Magnum helps a woman find her missing cousin, a Russian fugitive; Higgins' and Kumu's lives are put in danger when they get too close to the case.
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.