Uploaded February 2026 | Updated September 2026, 3 weeks ago

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Serial killers once dominated headlines. Now they’ve almost vanished. Did lead poisoning fuel a generation of killers? Has controversial chemical castration been the cure? Journalist Sana Qadar goes beyond true crime to investigate the psychology of serial killers. Subscribe to ABC Science YouTube 👉 ab.co/2YFO4Go

Listen to the All In The Mind podcast on ABC listen 👉 https://www.abc.net.au/listen/programs/allinthemind

00:00 Intro
01:15 The Golden Age of Serial Killers
01:50 The Psychology Of Serial Killers
02:55 Did Lead Poisoning Create Criminals?
04:10 Does Legalised Abortion Reduce Crime?
05:50 Chemical Castration: Does It Work?
07:28 Claremont Killer: Australia's Most Recent Serial Killer?
08:30 Bowraville Killer: Unsolved Tragedy
10:23 Australia's True Crime Obsession

The lead-crime hypothesis: A meta-analysis: sciencedirect.com/science/article/pii/S0166046222000667

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