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

A New York Times Bestseller
A San Francisco Chronicle Bestseller

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. His quest 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 Mustafa, The Most Dangerous Animal of All tells the…