Heol Fanog in the Brecon Beacons has been described as the most haunted house in Britain. It’s also been branded Hellfire Farm, and the Grand Budapest Hotel of Horrors, but it’s perhaps the title of the Welsh Amityville that describes it best. Chronicle reporter Tim Butters revisits the 1990s haunting that drove a family to despair and continues to cast a long shadow to this day.
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