The team persuades The Gas Man to step out from the shadows. He reveals the first big clue in the investigation to how he got away with it – and makes a surprising claim about his role in the case

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Reporter: Chloe Hadjimatheou 

Producer: Claudia Williams

Editor: Jasper Corbett

Narrative editor: Gary Marshall

Sound design: Hannah Varrall

Original theme music: Tom Kinsella

Original artwork: Jon Hill

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