Piglets Don't Watch Television (Abby and Tess Pet-sitters)

When Ms. Fitzpatrick calls to ask if Abby and Tess will pet-sit Prissy, Abby hears barking in the background. Could this be Abby's dream come true? A real live puppy to look after and cuddle for three whole days? But it turns out that Prissy is no ordinary pet. When strange things start to happen around Ms. Fitzpatrick's house, Tess claims that Prissy wields magical powers. Abby thinks Tess is full of hogwash and is determined to find a logical explanation. But as things go from weird to weirder, even Abby begins to wonder.