Mystery in the Snow

Henry, Jessie, Violet, and Benny used to live alone in a boxcar. Now they have a home with their grandfather, and are spending their winter vacation at Snow Haven Lodge.
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!