I Shrunk My Best Friend - Book 3 Who would have thought a little ray gun could cause so much trouble!!! Bella, Joe, and Zac have to fight their way through killer insects, Mad Mary, plus pesky little sisters, and a rather dumb brother to find help so they can return to normal size. I'm not going to spoil the story for you by telling you exactly what happens in Book 3...but I will say that LOTS of things happen! Will they ever be normal again? How will Zac feel about Bella at the end of this story? Hmmm...there's only one way to find out! Hope you love this final addition to the series. A fun and captivating book for girls aged 9-12 and any kids who love funny books.