When DC Rose Gifford is called to investigate the death of a young woman suffocated in her bed, she can't shake the feeling that there's more to the crime than meets the eye. It looks like a straightforward crime scene -- but the police can't find the killer. Enter DS Moony -- an eccentric older detective who runs UCIT, a secret department of the Met set up to solve supernatural crimes. Moony wants Rose to help her out -- but Rose doesn't believe in any of that. As the killer prepares to strike again, Rose must pick a side -- before a second woman dies.