The Trossachs in Scotland are a riot of colourful beauty. Amidst all this colour there is a decades-old ugly black secret. Robert Spence, Fraser Alexander and Duncan Watson are taking one of their short annual walking holidays. They shelter from a storm in an abandoned decrepit farmhouse. Learning the dark history of murder in this house Robert, a recovering alcoholic and sound engineer, unites two random pieces of conversation that are separated by nine years. He becomes obsessed with the thought that the house might have recorded its history. As a sound engineer, he is sure that he can replay that history. His two friends wonder if he is back on the booze and dismiss that crazy idea. Robert won’t let go. In exasperation, his friends tell him to do it. They will have nothing to do with his idea unless he produces a machine that will replay history. To their astonishment, Robert eventually claims to have invented a machine that can do what he wants. During an expedition to the old house, the three think that they might have uncovered a miscarriage of justice. Sucked in by Robert’s enthusiasm, the three try to identify a new suspect. What they eventually uncover taxes the legal system and leads to unforeseen consequences for two people.