The Most Dangerous Animal of All: Searching for My Father...and Finding the Zodiac Killer

Gary L. Stewart · Susan Mustafa

May 2014 · HarperAudio · Narrated by Gary L. Stewart

About this audiobook

“I promise that you’ve never read anything like The Most Dangerous Animal of All. Mesmerizing from the first page, the story includes a shattering surprise that will sear itself in your memory. Be prepared to read non-stop; this really is a book you won’t be able to put down.” —Jeff Guinn, author of Manson: The Life and Times of Charles Manson

An explosive and historic New York Times bestseller 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 hunt 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.

Ratings and reviews

No proof that his father was the Zodiac at all. All based on the fact that his father couldn't be ruled out as the author of the Zodiac letters to the editor and police notice it didn't state his father WAS the author of the letters. If his father was the Zodiac why wasn't there any proof whatsoever?

Very good read

About the author

Gary L. Stewart is vice president of Delta Tech Service of Louisiana. More than a decade ago, Gary began writing a journal, chronicling every detail of his search for his father and his own identity. That journal served as the basis for The Most Dangerous Animal of All.

Susan Mustafa is an award-winning author and journalist. She is the coauthor of Dismembered, written with Sue Israel, and Blood Bath, written with Special Prosecutor Tony Clayton and Sue Israel.