`Once upon a time, not so long ago, a monster came to the small town of Castle Rock, Maine... He was not a werewolf, vampire, ghou4 or unnameable creature front the enchanted forest or front snow wastes; e was only a cop... Cujo is a huge Saint Bernard dog, the best friend Brett Camber has ever had. Then one day Cujo chases a rabbit into a bolt-hole. Except it isn't a rabbit warren any more. It is a cave inhabited by rabid bats. And Cujo falls sick. Very sick. What happens to Cujo, how he becomes a horrifying vortex inexorably drawing in all the people around him, makes for one of the most heart-stopping novels Stephen King has written.