Dink Josh and Ruth Rose love visiting their friend Sammi the prince ofCostra. But the owners of a yacht they admire are acting a little suspicious.And theres su... » 

Dink Josh and Ruth Rose love visiting their friend Sammi the prince ofCostra. But the owners of a yacht they admire are acting a little suspicious.And theres suddenly been a robbery on the island. Can the kids find aconnection between the robbery and the mysterious yellow yacht? Illustrations. «