"This letter has come straight from the murderer, don't you realize that? Hot from his bloody hand. Don't just stand there dithering, man. Don't you realize you hold the key to everything?" The Clove and Hoof is the hot spot in Larcombe for a pint of bitter, a good story and some laughs. It's also the focal point of a bizarre series of murders, for the only connection the victims have seems to be that they all frequented the local pub. Strange pranks, a spate of anonymous letters all painted in blue watercolor, and a decapitated head found floating in the stream near Starehole Gap all lead to the police uncovering unusual criminality dating back 20 years. Two policemen with decidedly differing approaches to crime solving head up the professional side of the investigation, accompanied by Christian Peascod, dilettante of the arts and amateur detective.