A team of obnoxious ghost hunters descends on Cressida Upthorpe's boarding house, convinced it must a source of paranormal activity given that three murders occurred there in a short space of time. After one of the ghost hunters dies, or rather dyes - well, both - Sibyl does her best to keep well away from the investigation, that is, until Cressida almost falls victim. With the bumbling detectives being as useless as ever, Sibyl races to solve the...