This is another little book about Katie's switcheroo life. But this time its almost halloween and there's a little stray cat waiting to get adopted. Katie can't resist that black cat. Even if it is bad luck. But bad luck is what happens when the cat runs over to that big house on elm street. But then something unbelievable happens. A witch pops out of the window and scares the cat (and Katie) away. But then the worst thing ever happens Katie turns into the witch. This turns out to be the worst halloween ever and theres nothing Katie can do about it or can she?