Rachel Sylvester travels to Greece to investigate whether genetic science could change the story in the case of Roula Pispirigou – a mother who was convicted of killing her three young children just last year.

Our thanks to The Francis Crick Institute for sharing recordings and insights. 

Reporter: Rachel Sylvester

Producer: Gary Marshall

Music supervisor: Karla Patella

Sound design: Rowan Bishop

Podcast artwork: Lola Williams

Executive producer: Basia Cummings

This episode is sponsored by The Life of Chuck. Join us across the UK for a preview screening on Wednesday 13 August, before it hits cinemas nationwide on 20 August. Find the locations and book now at SEEITFIRST.COM and enter the code CHUCK.

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Scientist Carola Vinuesa and her team test their extraordinary genetic discovery in a court of law.

Our thanks to The Francis Crick Institute for sharing recordings and insights. 

Reporter: Rachel Sylvester

Producer: Gary Marshall

Music supervisor: Karla Patella

Sound design: Rowan Bishop

Podcast artwork: Lola Williams

Executive producer: Basia Cummings

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Kathleen Folbigg is just trying to survive. She’s a grieving mother, sentenced to life in jail for killing her four infant children. That is, until a small group of people start to question whether she might be the victim of a terrible miscarriage of justice.

Our thanks to The Francis Crick Institute for sharing recordings and insights. 

Reporter: Rachel Sylvester

Producer: Gary Marshall

Music supervisor: Karla Patella

Sound design: Rowan Bishop

Podcast artwork: Lola Williams

Executive producer: Basia Cummings

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Journalist Rachel Sylvester investigates the case of 'Australia's worst serial killer'. And discovers, in a story about mothers who have been accused of murdering their own children, there is one man who connects them all: a doctor called Roy Meadow.

Our thanks to The Francis Crick Institute for sharing recordings and insights. 

Reporter: Rachel Sylvester

Producer: Gary Marshall

Music supervisor: Karla Patella

Sound design: Rowan Bishop

Podcast artwork: Lola Williams

Executive producer: Basia Cummings

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Introducing...The Lab Detective

Kathleen Folbigg experienced unimaginable loss. All four of her infant children died suddenly, over a 10-year period. Their deaths were unexplained. Until a police detective turned up at her door, and arrested Kathleen on suspicion of murder. 

She was labelled ‘Australia's worst female serial killer’, convicted, and was destined to spend most of the rest of her life in jail. 

Until a different type of detective entered her life. A scientist working in a lab who uncovered the truth behind the deaths. 

This is the story of a shocking miscarriage of justice, but as journalist Rachel Sylvester starts to investigate how this happened, she learns that Kathleen is not alone – other mothers have endured the same fate, and may also be in prison. 

The Lab Detective is a story about the power of science, and the determination of those searching for the truth.

The full series is available to listen now.

Reporters: Rachel Sylvester 

Producer: Gary Marshall

Executive editor: Basia Cummings 

Music supervisor: Karla Patella 

Sound design: Rowan Bishop 

Artwork: Lola Williams 

Fact checking: Ada Barume and Madeline Parr

Our thanks to The Francis Crick Institute for sharing recordings and insights.

Watch a short documentary on the genomics team behind Kathleen Folbigg's case filmed at the Crick

To find out more about The Observer:

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Head to our website observer.co.uk 

Download the Tortoise app – for a listening experience curated by our journalists

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When Lucky Boy launched back in March, there was an important detail that didn't make it into the podcast, for legal reasons: the team had discovered that they weren’t the only people who had been investigating the allegations made by Gareth - the Metropolitan Police had been too. 

Now, reporter Chloe Hadjimatheou has an update.

To find out more about The Observer: Subscribe to TheObserver+ on Apple Podcasts for early access and ad-free content head to our website observer.co.uk 

Download the Tortoise app – for a listening experience curated by our journalists

If you want to get in touch with us directly about a story, or tell us more about the stories you want to hear about contact [email protected] 

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Sally Anne Bowen doesn’t want to speak about her relationship with Gareth, but it turns out there is a way of hearing her version of events. And after months of searching, Chloe gets a message from another ‘lucky boy’. 

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If you want to get in touch with us directly about a story, or tell us more about the stories you want to hear about contact [email protected]

Reported and produced by: Chloe Hadjimatheou and Gary Marshall

Sound design: Hannah Varrall

Podcast artwork: Lola Williams

Executive producer: Basia Cummings

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Chloe hears from a former teacher who seems to support what Gareth believes - that there was a cover-up. And it’s still going on today.

You can find out more about Tortoise:

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If you want to get in touch with us directly about a story, or tell us more about the stories you want to hear about contact [email protected]

Reported and produced by: Chloe Hadjimatheou and Gary Marshall

Sound design: Hannah Varrall

Podcast artwork: Lola Williams

Executive producer: Basia Cummings

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Gareth is convinced that his memories are true and that there are plenty of witnesses who can corroborate his story, so why will no one help him? 

You can find out more about Tortoise:

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Become a member and get access to all of Tortoise's premium audio offerings and more

If you want to get in touch with us directly about a story, or tell us more about the stories you want to hear about contact [email protected]

Reported and produced by: Chloe Hadjimatheou and Gary Marshall

Sound design: Hannah Varrall

Podcast artwork: Lola Williams

Executive producer: Basia Cummings

Hosted on Acast. See acast.com/privacy for more information.

Gareth spent years believing he was a lucky boy. He was the 14-year-old who got the attention of the attractive young science teacher. Now, decades later, he wants the truth to come out about the damage it’s caused him. But his story is not straight forward. 

You can find out more about Tortoise:

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Subscribe to Tortoise+ on Apple Podcasts for early access and ad-free content

Become a member and get access to all of Tortoise's premium audio offerings and more

If you want to get in touch with us directly about a story, or tell us more about the stories you want to hear about contact [email protected]

Reported and produced by: Chloe Hadjimatheou and Gary Marshall

Sound design: Hannah Varrall

Podcast artwork: Lola Williams

Executive producer: Basia Cummings

Hosted on Acast. See acast.com/privacy for more information.