The final page is supposed to light up. Mine did not so I bought new 1.5 v batteries figuring those that were installed were dead or faulty. Unfortunately the batteries in the book are much thinner than what I have been able to locate and you cannot screw the battery cover back in place. If you install the thicker ones. More expensive to return than it's worth. Disappointed, it was to go into a gift bag with a baby shower present tomorrow .