The Secret Of The Golden Cowrie

Connie Lawrence loves secrets, and when Aunt Laura shares one with her, it leads them both to a puzzle connected with a beautiful golden cowrie shell. Connie plunges eagerly into the mystery. Figuring it out will be fun, and besides, it will give her a chance to prove herself to her big brother, Dan. But who is the prowler that knows so much about Aunt Laura's house?