The Catnap Cat-Astrophe! — Louise Munro Foley

Ever since Omar's escape from the vampire village things haven't been the same. In fact, without the cat's secret powers the village is in shambles. They must get Omar back! But how?

Norman--the vegetarian vampire--has tried several times already to bring Omar back, and failed. That's because Omar has been helped by his adoptive owner, fifth-grader Tracey Wilson.

But the vampire are despurrate. Kabil--the head vampire--has decided to send in reinforcements: Frodina. This time they will not fail!