From the bestselling author of the generation-defining series The Baby-sitters Club comes a series for a new generation! Sister troubleKaren loves her stepsister Kristy. Then Daddy gives Kristy a special pin. Karen is jealous. She wants the pin. But Kristy will not let Karen even borrow it. Karen borrows the pin anyway. Then she loses it in the snow. Uh-oh. Now what is Karen going to do?