Durante toda su vida Cujo fue un buen perro, un San Bernardo grandote, pacífico, juguetón y amante de los niños. Realmente se trataba de un perro bueno y feliz. Feliz hasta que le sucedió algo, y el cerebro de perro de Cujo se cubrió de una de esas oscuridades que se alimentan de sangre. Ahora, se ha convertido en un perro asesino; doblemente cruel por cuanto la gente no conoce su mutación y aún lo ve con su anterior bondad. Heraldo de un pequeño apocalipsis, Cujo desencadenará sobre un pueblo modélico un huracán de pánico y de muerte. Outside a peaceful town in central Maine, a monster is waiting. Cujo is a two-hundred-pound Saint Bernard, the best friend Brett Camber has ever had. One day, Cujo chases a rabbit into a cave inhabited by sick bats and emerges as something new altogether. Meanwhile, Vic and Donna Trenton, and their young son Tad, move to Maine. They are seeking peace and quiet, but life in this small town is not what it seems. As Tad tries to fend off the terror that comes to him at night from his bedroom closet, and as Vic and Donna face their own nightmare of a marriage on the rocks, there is no way they can know that a monster, infinitely sinister, waits in the daylight. What happens to Cujo, how he becomes a horrifying vortex inescapably drawing in all the people around him, makes for one of the most heart-stopping novels Stephen King has ever written. “A genuine page-turner that grabs you and holds you and won’t let go” (Chattanooga Times), Cujo will forever change how you view man’s best friend.