A clever scheme has been devised to remove original works of art and replace them with imitations, Lord Wessley being the victim of this deceit. Amy and John spend the summer at Happisburgh and slowly unravel the crime. John is a retired detective from Ontario Canada while Amy has the unusual abilities of a feline-whisperer - she can actually communicate with domestic cats at a primitive level. One clue at a time John begins to unravel the mystery, then suddenly a serving girl who is also an artist's model is murdered and Lord Wessley is framed. The murder throws the household into confusion and the Lord is arrested. The art theft appears to be an impossibility, thus the police are not convinced such an event ever took place. The murder on the other hand seems quite obvious.