ZODIAC: Selected Radio/Podcast Interviews



This 15-part podcast series examines the unsolved “Zodiac” mystery and features retired Vallejo police detective Ed Rust, photographer Tom Balmer, former San Francisco Chronicle reporter Duffy Jennings, criminal psychologist Eric Hickey, San Francisco State University historian and lecturer Peter Richardson, retired forensic scientist and cold case investigator Paul Holes, 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.

CLICK HERE > Listen to all 15 episodes of MONSTER: THE ZODIAC KILLER on iHeartRadio

  • AIRTALK – “DNA: Zodiac and the Golden State Killer w/ host Larry Mantle – Guests: Anita Chabria, social justice reporter, Sacramento Bee, and Michael Butterfield, writer/researcher, ZodiacKillerFacts.com / Aired May 4, 2018 – NPR affiliate KPCC California
  • SPACED OUT RADIO w/ Host Dave Scott; guest Michael Butterfield – December 2016

HOUSE OF MYSTERY: The Zodiac Report w/ host Alan R. Warren and writer Michael Butterfield

The “Zodiac Roundtable” discussion with Mike Morford (ZodiacKillerSite.com), David Oranchak (ZodiacKillerCiphers.com), Michael Butterfield (ZodiacKillerFacts.com), and host Al Warren.


  • COAST TO COAST AM w/ host George Noury, featuring writer Michael Butterfield and Zodiac researcher Ed Neil, with other highlights.
  • ZODIAC: A to Z / Robert Graysmith’s Crooked Compass – In this segment of the audio webcast program ZODIAC: A to Z, writer Michael Butterfield and Zodiac researcher Ed Neil explain the geographic errors contained in the books Zodiac and Zodiac Unmasked. Recorded in 2007, this 7-part webcast examines the author’s many errors concerning the location of the crime scene on Lake Herman Road, the crime scene at Blue Rock Springs Park, the location of the pay phone used by the Zodiac to call the Vallejo Police Department, the crime scene at Lake Berryessa, the location of the Zodiac sighting on the night of his last known murder in San Francisco, the author’s infamous “hidden road” in Vallejo, and his claims regarding the Zodiac’s Mt. Diablo map. This audio webcast is accompanied by illustrations, maps, aerial photographs, and excerpts from Robert Graysmith’s books.

Episodes of the NBC radio show HOUSE OF MYSTERY with co-host Michael Butterfield: