Book Description 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 story of Stewart's decade-long hunt. While combing through government records and news reports and tracking down relatives and friends, Stewart turns up a host of clues—including forensic evidence—that conclusively identify his father as the Zodiac Killer, one of the most notorious and elusive serial murderers in history. For decades, the Zodiac Killer has captivated America's imagination. His ability to evade capture while taunting authorities made him infamous. The vicious specificity of his crimes terrified Californians before the Manson murders and after, and shocked a culture enamored with the ideals of the dawning Age of Aquarius. To this day, his ciphers have baffled detectives and amateur sleuths, and his identity remains one of the twentieth century's great unsolved mysteries. The Most Dangerous Animal of All reveals the name of the Zodiac for the very first time. Mustafa and Stewart construct a chilling psychological profile of Stewart's father: as a boy with disturbing fixations, a frustrated intellectual with pretensions to high culture, and an inappropriate suitor and then jilted lover unable to process his rage. At last, all the questions that have surrounded the case for almost fifty years are answered in this riveting narrative. The result is a singular work of true crime at its finest—a compelling, unbelievable true story told with the pacing of a page-turning novel—as well as a sensational and powerful memoir. 

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 HarperCollins is putting out a book tomorrow by a man who alleges that his father was the Zodiac Killer, New York magazine says: 
 
 Stewart, a vice-president at Delta Tech Service in Baton Rouge, alleges that his father was the Zodiac Killer, who is believed to have killed at least five people in Northern California, and famously sent letters and cryptograms to Bay Area newspapers. 
 
 He reached this conclusion after twelve years of research, Tina Andreadis, a publicist at HarperCollins, told me this afternoon. 
 
 
 
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 HarperCollins is a legitimate, if sensationalistic, publisher—it was the intended original home of O.J. Simpson's pseudo-confession If I Did It. Its employees have apparently been very careful to keep word of the premise of the book, called The Most Dangerous Animal of All, a secret.
– It's an explosive claim shrouded in an unbelievable amount of secrecy. Gary L. Stewart alleges that a dozen years of research have led him to the conclusion that his father was the Zodiac Killer—and HarperCollins is publishing a book to that end today. New York broke the news yesterday, pointing out that a sea of HarperCollins staffers have managed to keep the lid on The Most Dangerous Animal of All, which as of yesterday appeared on the publisher's website, without cover art or mention of the words "Zodiac Killer." But it does explain that Stewart, the VP of a Baton Rouge cleaning company, came to his conclusion after launching a search for his biological father shortly after his birth mother made contact with him. It also claims that he unearthed "forensic evidence" among the "host of clues" he found. New York spoke with HarperCollins publicist Tina Andreadis, who shines a little more light on the origins of the book, which the publishing house's lawyers felt "was legally sound" upon review, she says. Who didn't review it: The San Francisco Police Department, which the book alleges "knew more than they’re willing to admit." The killings took place in Northern California beginning in the late 1960s, and Andreadis notes that Stewart's father has both a resemblance to sketches of the killer and a criminal record for misdeeds like bad checks in San Francisco. Slate points out that the book is coming out of a pretty reputable publishing house, though one that has had its "sensationalistic" turn; Slate notes it was where OJ Simpson's If I Did It was supposed to be published. It's certainly not the first book claiming to have cracked the case—nor the first time someone pinned the crimes on his or her dad.