The Mystery of the Singing Ghost: The Boxcar Children are excited because their cousins are moving to Greenfield. They decide to fix up the house that cousins Joe and Alice have bought. There's just one problem: it seems to be haunted — by a ghost that sings! Is someone trying to keep Joe and Alice from moving in? The Mystery in the Snow: The lodge is having its annual winter carnival, and the Boxcar Children sign up to compete in events like skiing, skating, sledding, and building snow and ice sculptures. But no sooner has the competition begun than the children have a mystery to solve! The Pizza Mystery: The Boxcar Children are helping out at a pizzeria. The pizzeria is run by their old friends the Piccolos, who've been having lots of troubles keeping their business going. Working at the little restaurant is so much fun, but the children wonder . . . is someone deliberately trying to shut down Piccolos' Pizzeria?