It doesn't appear that MGM gave "P.I. Private Investigations" much of a theatrical release (if any), and they gave it to another company to release on home video. The most plausible reason for those things is that they saw they had a bomb on their hands. It's hard to believe that John Dahl of "Red Rock West" and "The Last Seduction" fame was one of the writers, though in fairness to him, someone else (the director) came up with the story and Dahl was paired with another screenwriter - not exactly creative freedom for him. But I'm surprised no one involved with this movie saw that the script was familiar stuff, with more than its share of coincidences used to propel things. As well as why the protagonist of the script doesn't just go to the press or the F.B.I. with what he knows. It doesn't help that the direction done on this screenplay is equally lacklustre. The movie lacks tension and excitement, with (among other things) the protagonist acting pretty calm for someone who is being pursued by ruthless killers. The "P.I." of the title probably stands for "Pretty Inane".