Carol persuades Magnum to do some work for her, gathering additional evidence for the big murder case of a man accused of killing his wife that is due to come up in court in a couple of days. The only witness of the woman's death is her young daughter, but Thomas faces a crisis of conscience over just what to and what not to present as evidence in the court-room that could ensure the conviction of the violent accused killer... Meanwhile, Higgins, tired of Magnum's slackness around the Estate, has taken use of the Ferrari away from him, so Thomas must find a new vehicle to get around in...