Northwood's comprehensive exploration begins with an introduction to the Zodiac's horrific crimes and extends through detailed profiles of key victims, crime scenes, and suspects. The book examines the killer's psychological profile, uncovers advancements in forensic science that have brought new insights, and analyzes controversial theories and suspects, including the infamous Ted Kaczynski. Furthermore, the narrative addresses the profound impact the Zodiac had on society, law enforcement practices, and popular culture, highlighting how the fear and fascination persist to this day.
Enriched with interviews from former law enforcement officers and cryptanalysts, Cracking the Zodiac also brings attention to recent breakthroughs and ongoing efforts to crack the Zodiac's ciphers. Northwood's compelling narrative not only investigates the Zodiac's confessions but also assesses their authenticity, making it a must-read for true crime enthusiasts and anyone intrigued by unsolved mysteries.