Bonus Episode - Bill Mann - “The Black Dahlia” follow-up interview - The Suspect

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 williamjmann.com See Privacy Policy at and California Privacy Notice at .

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Bonus Episode - Bill Mann - “The Black Dahlia” follow-up interview - The Suspect is an episode from Once Upon A Crime | True Crime by Esther Ludlow.

This episode is 00:41:48 long.

This episode was published on Jan 27, 2026.

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