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

An explosive and historic book of true crime and an emotionally powerful and 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 birthmother 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 and force him to reconsider everything he thought he knew about himself and his world. Written with award-winning author and journalist Susan D.

Mustafa, The Most Dangerous Animal of All tells the story of Stewart’s decade-long search for his father following a complex trail of startling twists and connections.

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 as one of the most infamous and still-wanted serial killers in American history.