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Vince speaks about his mother’s disappearance in 1968 – and how his own grandmother told him what had happened to her.

We learn more about his childhood, growing up with Silas Duane Boston as his only parent.

As Stephen and Dan reflect on what Vince has told them they head to CrimeCon in Nashville to investigate potential links to the Golden State Killer case. The conference is buzzing with the news of the arrest of Joseph James DeAngelo, who’s linked by DNA to the crimes.

At Crimecon we hear from investigators and victims connected to the GSK case – and there are some interesting reactions to the files we show them. But it’s when we share Vince’s interview with an expert criminologist that doubts start to creep in about his account. Can it really all have happened the way he tells it?

Find out more about the case here: www.bbc.co.uk/paradise