When Shane and his sister Portia delivered a package from their mom to Mr. Blair at the creepy old Blair mansion, they had no idea what was in it or what adventure awaited them. The package turned out to be a clock. But before they could find out why Mr. Blair was so upset, he disappeared. Then Shane and Portia fell into the cellar, where they found Shane's name on the wall, a lucky penny and their mom. They also found a note telling them to dismantle the clock. To read the story so far, go to www.washingtonpost.com/kidspost and click on "Summer Book Club." More than 40 readers entered this we...