Magnum and Higgins are on their way to London to attend to urgent business for Robin Masters and find themselves stirring up the past.

Thomas helps Penelope to continue to investigate Geoffrey's death and learns of Higgins' reluctance to visit his father.

Magnum welcomes a former high school friend who enlists his help to rescue a highly trained dolphin.

After saving Lauren Henderson from nearly drowning, Magnum falls in love with her and is drawn into a difficult situation.

Magnum's services are enlisted during the imminent opening of an International Convention of Jewelry Designers at an Island hotel.

Magnum discovers that the death of TC's good friend was accidental.

Magnum returns home after 13 years to attend his beloved grandfather's funeral.

Magnum discovers that cattle rustlers abound on the Island of Hawaii.

Magnum is hired to work with a representative of a publishing company to supervise a treasure hunt.

Magnum sees to it that a leak in the security system of a U.S. naval base at Pearl Harbor is eliminated.

Magnum becomes obsessed with finding a boy he thinks he has seen while scuba diving in Hawaiian waters.

Bizarre accidents overshadow the glitter and glamour of carnival on the island.

Magnum is the target of racketeers who want him dead and Robin Masters' nephew impersonates him, with very dangerous consequences.

Magnum decides to investigate the mystery surrounding Higgins' sudden departure from Robin's Nest.

Magnum, TC, Rick and Higgins must guard the statuette of a priceless Hawaiian Family God on route to the Hilo Museum.

When Rick's boat returns from a cruise empty, Magnum, TC and Higgins go in search of Rick and his passengers who are presumed dead.

While searching for a missing boy, Magnum comes across a black market baby business.

Higgins must cope with a visiting dignitary, an invitational chess tournament and the appearance of his flamboyant half brother.

Friendships are tested when Rick becomes a million dollar lottery winner while TC and Magnum fight the destruction of TC's club house for underprivileged and troubled kids.

Magnum's encounter with a photographer uncovers an embezzler long thought dead.