The Anderson Twins

One month after Shelby and Daniel solved the mystery of The Secret of Morning Star Ranch, the Anderson family go skiing. When they get to the ski lodge, they find out the ski lift is not working. While doing some sleuthing, Shelby and Daniel find out that several things have been tampered with, and someone is trying to close down the ski lodge. Can Shelby and Daniel solve the mystery before they have to leave for home on New Year's Day?