Watch The Most Dangerous Animal of All

The Most Dangerous Animal of All is a true-crime series from FX that premiered in March 2020. The show is based on the best-selling book of the same name by Gary L. Stewart, who claims to have discovered that his biological father was the infamous Zodiac killer. The series follows Stewart's personal journey as he sets out to uncover the truth about his father's identity and possible involvement in the Zodiac murders. Along the way, he is joined by investigative journalist Jude Gilford and Katelyn Kapocsi, a forensic handwriting expert.

The show is divided into four parts, each one focusing on a different aspect of Stewart's investigation. In the first part, Stewart details his troubled upbringing and how he came to discover that his biological father was a man named Earl Van Best Jr. In the second part, he begins to investigate Van Best's past and uncovers a history of criminal behavior that raises suspicions about his connection to the Zodiac killer.

As Stewart delves deeper into his investigation, he begins to connect the dots between Van Best and the Zodiac murders. He discovers that Van Best had a history of writing letters with similar handwriting and language to those sent by the Zodiac killer. He also uncovers evidence that suggests Van Best was in the San Francisco Bay Area around the same time as the murders.

The third part of the series focuses on Kapocsi's role as a forensic handwriting expert. She analyzes the letters sent by the Zodiac killer and compares them to samples of Van Best's handwriting. Her analysis reveals striking similarities between the two, adding further weight to Stewart's theory that Van Best was the Zodiac killer.

In the final part of the series, Stewart and Gilford travel to Louisiana to meet with Van Best's surviving family members. They hope to find answers and closure, but their efforts are met with resistance from Van Best's relatives. The series ends without a definitive conclusion, leaving viewers to draw their own conclusions about whether or not Van Best was the Zodiac killer.

Throughout the series, Stewart's personal narrative is interwoven with interviews from experts on the Zodiac case and archival footage from the time of the murders. The show also features dramatic reenactments of key moments in Stewart's investigation.

The Most Dangerous Animal of All is a gripping and thought-provoking series that explores the enduring mystery of the Zodiac killer. While it doesn't provide a conclusive answer to the question of the killer's identity, it offers a compelling new perspective and raises important questions about the role of nature and nurture in shaping a person's behavior.

The Most Dangerous Animal of All is a series that ran for 1 seasons (4 episodes) between March 6, 2020 and on FX