Bonus Episode - Bill Mann - “The Black Dahlia” follow-up interview - The Suspect
Once Upon A Crime
Esther Ludlow
4.6 • 5K Ratings
🗓️ 27 January 2026
⏱️ 42 minutes
🧾️ Download transcript
Summary
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
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
See Privacy Policy at https://art19.com/privacy and California Privacy Notice at https://art19.com/privacy#do-not-sell-my-info.
Transcript
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| 0:00.0 | Thank you for joining me for today's episode of Once Upon a Crime. |
| 0:11.3 | Next week, we'll continue with part two of our series, Ted Bundy for the Defense. |
| 0:17.3 | In this bonus episode, we'll revisit our last series, Broken, the Black Dahlia Murder, |
| 0:23.2 | and discuss an update on the case that has generated a bit of buzz online. |
| 0:28.4 | If you've been following recent headlines, you've likely seen the Los Angeles Times article |
| 0:33.0 | that reignited global attention on the Black Dahlia murder. |
| 0:45.3 | The piece centers on an amateur sleuths theory proposing a connection between the Black Dahlia case and the Zodiac killer. And it identifies Marvin Margolis as the prime suspect, quoting author William J. Mann in the process. |
| 0:53.3 | The Zodiac angle is provocative and has certainly captured the public imagination. |
| 0:58.4 | But what's been largely lost in the noise is this. |
| 1:01.6 | Marvin Margolis did not suddenly emerge as a suspect because of that article. |
| 1:07.2 | Margolis was identified as a strong credible suspect through years of original investigation |
| 1:13.0 | by William J. Mann, just revealed in his new book, Black Dahlia, Murder, Monsters, and Madness |
| 1:19.5 | in Mid-Century Hollywood, released today, January 26, 2026. |
| 1:26.1 | This matters because renewed media attention risks reducing a deeply researched body of |
| 1:31.0 | evidence to a single sensational theory. Man's book goes far beyond what has been reported so far, |
| 1:37.8 | drawing on documentary proof, government records, an exclusive material no other journalists had yet |
| 1:43.6 | accessed. In Black Dahlia, |
| 1:46.5 | Mannon reconstructs Margolis's life and psychology in unsettling detail, including a file the FBI has |
| 1:53.0 | refused to release on Margolis, even after a formal appeal, previously unexamined arrest and court |
| 1:59.0 | records in both Chicago and California, military records |
| 2:02.9 | confirming Margolis's anatomical and surgical proficiency, alongside documentation of severe mental |
| 2:10.4 | illness and academic records revealing intense psychological and situational stress in the |
... |
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