Professor and the Phantom Killer

Police in various countries are faced with a series of mysterious and brutal murders resembling ritualistic killings. Investigations invariably hit a dead end, as the killer vanishes from the crime scene like a ghost. Taking on the case, Detective Boyd meets university professor Mäkles, who studies ancient magical cults where human sacrifices are practiced to gain the support of dark forces. Now the professor must delve into the depths of the psychology of killers and uncover the mystery behind the brutal crimes.