When Karen Harmon, a nurse whom Magnum knew in Vietnam whom was once traumatised when a wounded soldier she was treating was killed in a bombing, and is now a doctor, is accused of the murder of three patients in her care, he is determined to help her clear her name. All but one of the entire hospital board believe her to be guilty, and when his offer of help is rejected by Karen and her now husband, Thomas feels compelled to look into the case anyway. A hounding reporter determined for a story does not help the issue; and the whole matter only serves to trigger off delayed stress syndrome for Karen from that fateful bombing in 'Nam...

Higgins asks Magnum to collect an old friend, Asher Solomon, from the airport – who Magnum finds is a Rabbi, arriving in Hawaii with a sacred Torah that was recently returned by the Antiquities Department of Taiwan. But on the journey back to the Estate, they are ambushed and the valuable Torah is grabbed from the Rabbi. As Magnum helps the Rabbi try to recover the sacred artefact, their search leads them to a ring of smugglers...

When Rick's boat returns from a cruise deserted, Magnum searches for the answers to what has happened to his friend and the passengers on-board, who are all presumed dead. His hunt is somewhat hampered by the separate investigation of a law officer who models himself on John Wayne, but as they both try to get to the bottom of the strange disappearance of the boat's passengers, they stumble upon a plot involving mobsters and two million dollars in counterfeit money...