By the creators of Criminology: a complete chronicle of the Zodiac serial killer investigation, including photographs and documents. In the late 60's and early 70's, an enigmatic serial killer terrorized the San Francisco Bay area—and teased the police tasked with stopping him. Through bold letters and cryptic ciphers mailed to local newspapers as well as taunting calls to police, the Zodiac left his mark on the state of California. Without warning he was gone, but not before achieving infamy in the annals of true crime history. Just who was the Zodiac Killer? In the first season of their popular podcast Criminology, Michael Morford and Mike Ferguson take a deep dive into one of true crime's most notorious cold cases. Using actual case files, documents, and police reports they present a detailed chronicle of this mysterious investigation. In this volume, Morford and Ferguson bring the series to readers with added commentary, photographs, and documents.