Photographer Sally Faraday, looking to hire Magnum, meets him in undesirable circumstances when she prangs the front of the Ferrari while being pursued in a car chase by two men, an incident which also leaves Agatha with a broken ankle. Sally wants Thomas' help when it seems that she is being followed since returning from France with some photographs for a new book, in which she seems to have caught something on film that someone has reason to not want to ever be published...

When Ice Pick suddenly vanishes, Rick insists that Thomas find him. But things get complicated when Rick is arrested for allegedly killing a hitman who was contracted to murder Ice Pick -- and readily admits to the crime.

Higgins wants Magnum to find the ""Lost Art of the Ancients"", a priceless ancient scroll from a fallen civilization, that could spell disaster if it should ever fall into the wrong hands. But the search for the long-lost artefact is laced with abduction, danger and deceit, as an old flame of Magnum's, a foreign double agent, and a ruthless rival of Higgins' are all out to find the scroll as well, and the dangerous path to unearthing it could ultimately lead to death...

Thomas ponders his future while paying a visit to his family in Virginia, where he unexpectedly meets his grandfather and considers an offer to be reinstated to the Navy; Thomas returns to Hawaii to ascertain whether former girlfriend Linda Lee Ellison is being stalked; Rick prepares for his wedding to Cleo; Thomas and Linda renew their relationship as he searches for her stalker; Thomas becomes increasingly certain that his daughter Lily may still be alive.

As Rick's wedding looms ever closer, Thomas continues surveillance on Linda to catch the psychopathic killer who is stalking her; T.C. faces a reconciliation with his estranged wife; Thomas gets surprising news about his theory that Higgins is really Robin Masters, as well as the true fate of Lily.