This is the third book in the series. The fist book was Midnight for Charlie Bone. The second book was Charlie Bone and the Time Twister. The third book is Charlie Bone and the Invisible Boy. This story is about a boy named Charlie and a girl name Emma who go to a school named Bloor’s Academy. This trimester at Bloor’s Academy brings a few changes there is a new teacher Mr. Bloldova and a new student named Belle who lives with the Yewbeam aunts and seems to have a strange power over them. Emma and Charlie soon discover Mr. Bolova’s secret identity. He is the brother of Ollie Sparks the boy who lives in the attic of Bloor’s Academy Ollie has always been prying into matters that didn’t concern him, so Ezekiel Bloor made him invisible. When Charlie and his friends find him, Ollie is alone and hungry. They promise to make Ollie visible again with the aid of his brother Mr. Boldova. Can Charlie and his friends save Ollie? I think this would appeal to most boys and girls because it’s a mystery book.