A team of American parapsychologists travel to Wales to conduct a study of Margam Castle, one of the UK's most haunted buildings. Caroline Munro, Jane Merrow, Derren Nesbitt, Vernon Dobtcheff, Garrick Hagon, Judy Matheson, Simon Bamford Added on Netflix 2022-11-11. Added on Amazon Prime 2023-08-04. Youtube Trailer