Season 2 of the popular true crime podcast MONSTER features a 15-episode series devoted to the Zodiac mystery. Rolling Stone magazine published a brief article about the series, and The Wrap posted also posted a story about the premiere. The series features retired Vallejo police detective Ed Rust, photographer Tom Balmer, San Francisco Chronicle writer Kevin Fagan, former Chronicle reporter Duffy Jennings, criminal psychologist Eric Hickey, San Francisco State University historian and lecturer Peter Richardson, cipher expert David Oranchak, writer Michael Butterfield, and others, with audio clips of surviving victim Bryan Hartnell, Leslie, the daughter of Zodiac codebreakers Donald and Bettye Harden, possible Zodiac victim Kathleen Johns, SFPD Inspector David Toschi, park ranger William White, and many others involved in the case.
Episode #1 premiered on iHeartMedia News/Talk radio stations on January 2, 2019. According to several reports, MONSTER: THE ZODIAC KILLER reached more than 12 million downloads in the months of January and February 2019. On March 24th, a live episode of MONSTER was recorded at the Gramercy theater in New York City, including a Q&A session with the audience.