Showing Murder on Ice by Carolyn Keene

A weekend on the slopes is just what Nancy and Ned need to rekindle their romance. Joined by Bess and George, they head for the mountains—and run straight into deadly peril. First, Nancy's towline breaks, then she and Ned careen toward the edge of a cliff in an out-of-control Jeep! Among the suspects is a good-looking ski instructor who George is already falling for. Nancy’s got to move fast—before an avalanche of murder buries them all!