First of all this is a great book to keep in your purse, diaper bag, or car. Each double page spread has three object to look for that are hidden (a duck, spider and mouse). This proved as a saviour for me on more than one grocery run and doctors appointment waiting room! The story is about a little girl who is constantly thinking that she sees a "monster" in her house. This is a great book to show kids what THEY think is a monster has is just a regular item in the home and their imagination. Each double page spread is her thinking she sees yet another monster but lift the flap and you can then see what the items REALLY are under that blanket or behind the shower door. If you have a little one afraid of monster under the bed or in the closet, check out this book. It is funny, has gorgous pictures and the ending is the BEST part...but I'll leave it as a surprise.