The Alden children investigate when Mrs. Murray's jewels are stolen during a party for the Starlight Skating Troupe.

Overview: Grandfather is taking everyone on a special holiday trip to an old-fashioned New England inn. The Aldens have fun playing in the snow, ice-skating and working puzzles. Then suddenly they become part of a very special.

While staying at a London inn, the Aldens are puzzled by the peculiar behavior of two fellow guests, a mysterious stranger who follows them, and a misplaced antique brooch.