Blum seems to have it all: the perfect husband, police detective Mark, two beautiful little daughters, a thriving undertaker business in the basement of her parents' villa in Innsbruck. But she is hiding a dark secret: eight years earlier, she drowned her adoptive parents while sailing in Turkey. Back in the present, Mark is killed in what appears to be a hit and run. When Blum is going through his personal effects, she finds tapes of conversations he had with a homeless woman, Dunja, who claims she was abducted then kept in a cellar for five years near an idyllic Austrian resort. Blum takes up Mark's investigation where he'd left off but quickly crosses the line between investigating and avenging...