Forty years ago, a young woman and her infant daughter were found buried in the cold Icelandic snow. The mother’s throat had been slashed and the infant drowned. The case was never solved. Just a suspicion turned into a certainty: the husband did it. When he took his son and fled halfway across the world to California, it was proof enough of his guilt. Now, nearly half a century later and a year after his death, his granddaughter, Agnes, accepts true crime expert Nora Carver’s invitation to be interviewed for her popular podcast and hops on a flight to the remote town of Bifröst, Iceland. She wants to clear her grandfather’s name once and for all. Is it merely coincidence that a local girl goes missing the very same weekend Agnes arrives? Suddenly, Agnes and Nora’s investigation is turned upside down, and everyone in the small Icelandic town is once again a suspect.