Early 20th century. The Julius and Felton detective agency opens in the city of Blackpool, where those who are unable to help the police turn. There are two employees: the journalist Philip, who by chance was drawn into the investigation, and the mysterious Mr. Julius, an unsurpassed expert on the other world, brilliantly solving the most incredible crimes. The companions take on only unusual cases related to the supernatural: vengeful ghosts, deadly curses, the risen dead and mysterious murders. Time after time, they solve intricate puzzles and fight evil, saving lives, until one day a bloody crime from the past makes Felton wonder: what secrets is his companion hiding? And can he be trusted?