This could have been so much better if the casting were not so dreadful. As it is, it's only a passable adventure that sees two cops - David Carradine and Richard Rowntree on the case of a murderer who ruthlessly decapitates his victims - usually whilst they are seemingly impregnable on a rooftop, or somewhere equally lofty. Meantime, "Quinn" (Michael Moriarty) is trying to stay one step ahead of some folks he owes money too, and whilst hiding atop the Empire State Building, happens upon something startling! As the killings intensify, and sightings of a strange creature are reported to the police, he does a deal with them to reveal what might just be it's nest. The story is fine - but there are just way few appearances from our mysterious beastie, and the plot is also cluttered up with some Inca ritualim too. When we do see "Q" - well Ray Harryhausen it isn't. It has a cheap version of the "Hammer" look to it, and the acting and dialogue are no better. It's rated 'X', but I suspect that is because there is some nudity, there is nothing at all remotely scary to see here.