I just watched it and it was a letdown to me. It begins rather nicely with some good ideas, Kinski doing his stuff and very good Cipriani score [that clearly belongs to much better movie]. But durning its course the movie turns into complete trainwreck. Escpecially final 30 minutes are sleep-inducing, i almost feel asleep and i was watching it in the middle of the day and had a good sleep the night before. How many minutes of badly directed shooting back and forth can viewer cope with? 4/10 and i'm being generous here, probably because of Kinski and Cipriani. I have a feeling Umberto Lenzi must have seen this movie before making "Almost human", which is a brilliant movie and shows how such a story shall be properly done
Btw. I have heard this score somewhere before. Was it used in any other movie?