How Jemma Lilley's Fascination With Serial Killers Turned Deadly

How Jemma Lilley's Fascination With Serial Killers Turned Deadly

Author: Mamamia Podcasts March 4, 2026 Duration: 59:10
True Crime Conversations
True Crime

Some women dream of launching a career before 25. Some dream of owning their first home. Jemma Lilley had a different goal: she wanted to kill someone before her 25th birthday, but she knew she couldn't do it alone. 

Obsessed with serial killers and violent fantasy, Lilley set her sights on turning desire into reality. She found an accomplice in Trudi Lenon, an impressionable single mother whom she gradually drew into her world of fixation and planning. Together, they searched for what they chillingly described as the “perfect victim.” They chose 18-year-old Aaron Pajich-Sweetman, a vulnerable teenager who was a friend of Lenon’s son.

It is a case that still shocks those who hear it. A real-life horror story about manipulation, obsession, and the calculated, meticulous planning of two women who conspired to take the life of an innocent young man.

CREDITS 

Guest: Tim Clarke

Host: Claire Murphy

Senior Producer: Tahli Blackman

Group Executive Producer: Ilaria Brophy

Audio Engineer: Jacob Round

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Gemma Bath hosts True Crime Conversations, a podcast from Mamamia Podcasts that delves into infamous criminal cases from Australia and around the world. Rather than just recounting facts, each episode is built around a direct conversation with someone who has a unique, often personal connection to the story. You might hear from a detective who worked the case, a journalist who covered the trial, a family member seeking answers, or a forensic expert who examined the evidence. This approach brings a tangible, human dimension to stories that can sometimes feel distant or sensationalised. The tone is engaging and thoughtful, focusing on the nuances and the people affected, rather than just the shock value. It’s for anyone who appreciates a deeper, more conversational entry into the true crime genre, where the emphasis is on understanding the ‘why’ and the ‘how’ from those who were actually there. Listening to this podcast feels like being part of a serious, yet accessible, discussion about some of the most compelling and complex crimes in recent history.
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