To catch a cat thief

"Hundreds of cats are missing! Fear not-Penelope Ann Pickersgill and her hippie grandma are on the case. While her friends go to cool camps, twelve-year-old Penelope has to spend the summer with Grandma Bev, who is convinced that cat-eating aliens are beaming the town's furry friends aboard their mother ship at night. Lights in the sky point to UFO's, but Penelope is sure there's a more logical explanation. With a little help from Sherlock Holmes, she and Grandma Bev set out to find the cats. Will they be able to solve the mystery before all the cats in Thornhill disappear?"--Back cover.