# Bonus Episode - Bill Mann - “The Black Dahlia” follow-up interview - The Suspect Page: https://stenobird.com/podcast/once-upon-a-crime-1042225/bonus-episode-bill-mann-the-black-dahlia-follow-up-interview-the-suspect Text version: https://stenobird.com/podcast/once-upon-a-crime-1042225/bonus-episode-bill-mann-the-black-dahlia-follow-up-interview-the-suspect.md Podcast: [Once Upon A Crime](https://stenobird.com/podcast/once-upon-a-crime-1042225) Published: 2026-01-27T00:00:00+00:00 Episode link: https://mgln.ai/e/211/rss.art19.com/episodes/3e4c4f00-135d-42a8-88d0-b28e75bd5992.mp3?rss_browser=BAhJIg90cmFuc2NyaWJyBjoGRVQ%3D--952c5701c84ad333c69d5faa668f8177091704f0 Audio file: https://mgln.ai/e/211/rss.art19.com/episodes/3e4c4f00-135d-42a8-88d0-b28e75bd5992.mp3?rss_browser=BAhJIg90cmFuc2NyaWJyBjoGRVQ%3D--952c5701c84ad333c69d5faa668f8177091704f0 Processing state: not_requested JSON: https://stenobird.com/v1/public/podcasts/once-upon-a-crime-1042225/episodes/bonus-episode-bill-mann-the-black-dahlia-follow-up-interview-the-suspect Duration seconds: 2508 ## Resource A recent Los Angeles Times article has reignited worldwide interest in the Black Dahlia murder, spotlighting an amateur sleuth’s theory that attempts to link the case to the Zodiac Killer—and naming Marvin Margolis as a “new” prime suspect. But Marvin Margolis is not new. In this bonus episode, we’re joined once again by author William J. Mann , whose extensively researched new book, Black Dahlia: Murder, Monsters, and Madness in Midcentury Hollywood , is released today. Long before the headlines, Mann identified Margolis as the strongest—and most credible—suspect in the history of the case. In this follow-up interview, Mann responds directly to the recent media coverage, clarifies what his investigation does and does not support, and explains why decades of armchair detective theories have often missed the mark. This episode cuts through the noise to restore context, credit, and clarity—placing today’s headlines against the backdrop of years of original investigative work. Listen to the Once Upon a Crime series, Broken: The Black Dahlia Murder https://www.truecrimepodcast.com/introducing-broken-the-black-dahlia-murder-a-once-upon-a-crime-original-series/ About the Book: Black Dahlia: Murder, Monsters, and Madness in Midcentury Hollywood By William J. Mann Available now wherever books are sold Guest: William J. Mann Author of Black Dahlia: Murder, Monsters, and Madness in Midcentury Hollywood williamjmann.com   See Privacy Policy at https://art19.com/privacy and California Privacy Notice at https://art19.com/privacy#do-not-sell-my-info . ## Actions - request_transcript: `POST https://stenobird.com/v1/public/podcasts/once-upon-a-crime-1042225/episodes/bonus-episode-bill-mann-the-black-dahlia-follow-up-interview-the-suspect/transcription-requests` — Idempotently request low-priority transcript generation for this episode. - read_markdown: `GET https://stenobird.com/podcast/once-upon-a-crime-1042225/bonus-episode-bill-mann-the-black-dahlia-follow-up-interview-the-suspect.md` — Read the agent-friendly Markdown representation of this episode resource. A page view does not enqueue transcription. Agents should invoke `request_transcript` explicitly when they need this episode processed. ## Transcript Full transcripts are not published on public pages unless there is a clear rights basis.