But why has Bunnicula - so frisky just a short time ago - been so listless and tired of late? Is this part of Chester's scheme? Can Harold let Chester get away with hurting an innocent bunny, no matter what his harebrained suspicions are? It is not long before the Monroes notice Bunnicula's condition and rush him to the vet, and then the chase is on, ending up with a dramatic confrontation in a most unusual (and dangerous!) location.
For ages 8 to 12.
(From the Mystery Stories shelf.)