Summary of The Babysitter 3 by R.L. Stine?

i was wondering what happened in this book. i read the 1st 2nd but i don't have the third one. i mean i even have the fourth book too. Anyway i don't want a brief summary i want to know everything that happened in the book. i would really like to know so i can start reading the 4th book . plz help if you can thanks !!!