Magnum wrestles with his conscience when he discovers evidence proving both that a man on trial for murdering his wife is innocent, but that he's also gotten away with a different murder. Meanwhile, Higgins, tired of Magnum's slackness around the Estate, takes use of the Ferrari away from him.

Magnum finds himself surprisingly attached to his young client, a small Vietnamese boy who lost his mother and whose only hope in the world is to find his missing G.I. father.