Jonathan Creek is back in another spooky tale, calling upon his friend and sceptic Joey Ross (Sheridan Smith) to investigate a series of sinister and bewildering events at a house called Green Lanterns. When the beautiful young Emily Somerton is recruited to work as an assistant housekeeper to famous crime writer Hugo Doré she discovers the premises are home to a bizarre, unsolved Victorian murder mystery... and following the grisly death of her employer's wife Harriet, all the evidence suggests Emily is guilty of the crime. Ghostly visions, death threats she cannot remember writing, and the final, accusing words of the victim herself convince Emily she is losing her mind. Once again it is up to Jonathan Creek to dig deep and look beyond the paranormal for an explanation. Using his powers of analysis and deduction he and Joey find themselves in a race against time as they struggle to make sense of the baffling problem before them. A problem which leads, finally, to the eerie, isolated Judas Tree... and a solution more shocking than anyone could have imagined.