Britain's Countryside Killers
Last Seen
Season 1 Episode 3
In March 2011, Sian O'Callaghan vanished from a Swindon nightclub. This documentary details her last moments captured on CCTV and the grim discovery of her body.
Britain's Countryside Killers airs on True Crime at 9:00 PM, Sunday 18 May.
Learn more about Britain's Countryside Killers and other education/science/factual topics on our factual page
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