One night, Rick, feeling down after learning that a girl he was serious about is getting married, meets an attractive young woman called Sara, a beautiful woman dressed in a white vale. As the pair befriend each other, she tells him that she is being terrorised by a man named Henry Ellison, after she didn't return his feelings of love. But during a walk on the beach with the girl, she suddenly disappears, seemingly into thin air. Rick insists that Thomas look in to it, and they learn that Sara died 35 years ago, after supposedly committing suicide, though there was rumour that suggested she was murdered; and sightings of her ghost are occasionally reported. Magnum digs into both the past and present to find if there is logical explanation and if someone is impersonating Sara, or if it really was something more ethereal that Rick encountered..

It is Thomas' birthday, and he is hired by expert card player Jeanie Lowry, nick-named 'Texas Lightning' to act as her body-guard at a high stakes poker game on-board a luxurious yacht the coming night. Thomas is at first reluctant to take a body-guard job, but the large cash fee offered soon persuades him. But during the card game, Jeanie slips away and breaks into shady yacht owner Thompsons' safe. The break in is discovered and Thompson is ready to kill both Thomas and her, but they manage to escape and wind up stranded on a small island. Magnum and Jeanie are presumed dead, but Higgins, T.C. and Rick refuse to believe it and set out to search for them – but Thompson looks set to find them first. Worse still, all along, Jeanie is far from being what she claims to be...