Murderers and Their Mothers S01 E08 Leszek Pekalski: The Vampire of Bytowa

One of Poland's most notorious serial killers, Leszek Pekalski confessed to murdering dozens of people - men, women, and children, who were mostly savagely bludgeoned to death before being raped - although he later recanted all but one of his confessions. What role did his violent mother's heavy drinking while pregnant and later abuse and neglect play in Pekalski's evolution?