When Marion finally gets the chance to babysit her little sister, she finds that the task is harder than she expected, especially when she gets called to the Critter Club to help with a stray cat and must bring Gabby along.

Callie Barkley loves animals. As a young girl, she dreamed of getting a cat or dog of her own until she discovered she was allergic to most of them. It was around this time that she realized the world was full of all kinds of critters that could use some love. She now lives with her husband and two kids in Connecticut. They share their home with exactly ten fish and a very active ant farm.