A speaker at a telepathy conference claims a killer is not only in the audience, but will strike again that night - and promptly ends up murdered himself. Psychological thriller from director Dario Argento, starring David Hemmings and Dario Nicolodi. In Italian.

An English pianist living in Rome witnesses the brutal murder of his psychic neighbor. With the help of a tenacious young reporter, he tries to discover the killer using very unconventional methods. The two are soon drawn into a shocking web of dementia and violence.