British television drama in which a murder investigation uncovers a world of secrets. When Inspector Tyador Borlú (David Morrissey) is tasked with finding out how a young woman came to die, the roadblocks he encounters direct him to a much bigger case to solve. After discovering that the victim was killed due to her revealing the truth behind the world around them as they see it, Inspector Borlú sets out to track down the perpetrators of the crime and uncover the forbidden world that has so far remained unseen.