Magnum, P.I. - Season 5 Episode 20 The Man From Marseilles

An international French detective – the real-life model for a series of best-selling novels by Robin Masters – who is staying at the Estate, asks Thomas' help in locating a missing heir he's trying to track down. Everyone knows the distinguished Inspector from the many novels based on him, and is willing to help the famed detective in any way they can – especially the star-struck Carol – but things turn more dangerous when the investigation leads to one of the world's biggest drug dealers...