The most dangerous animal of all : searching for my father --- and finding the Zodiac Killer

Summary: "A revelatory memoir of a man whose ten-year search for his biological father leads to a chilling discovery: His father is one of the most notorious -- and still at large-serial killers in America. Soon after his birth mother contacted him for the first time at the age of thirty-nine, adoptee Gary L. Stewart decided to search for his biological father. It was a quest that would lead him to a horrifying truth. Combing through government records and news reports and through conversations with his father's relatives and friends, Stewart turns up a host of clues, including forensic evidence, identifying his father, Earl Van Best Jr., as one of the most infamous killers in American history"--