The Rooftop Mystery Author:Joan M. Lexau On moving day Sam will not walk four blocks with his sister's big doll. He and Albert leave it in a safe place and go to ask their friend Amy Lou if she will carry it for them. When they return, the doll is gone! Who could have taken it? — Will there be clues to help them? Yes, there are just enough clues, and perhaps you will find them before Sa... more »m and Albert do.