Ignoring an ancient prophecy, evil brother Gregor seeks to maintain his feudal power on his his Tyrolean estate by murdering and impersonating his benevolent younger twin.
Based on actual events of American serial killer Edmund Kemper, who murdered his grandparents at age 15 and, after being paroled for that crime, killed eight women in 1972 and 1973 including his own mother.
When a mentally ill young man thinks he witnesses an abduction and the police refuse to believe him, he reluctantly turns to his next door neighbor- a bitter, retired security guard- to help him find the missing woman.