The Bobbsey Twins and the Mystery at Snow Lodge

After an unlikely encounter with Mr. Carford, the twins learn he used to run the now-closed Snow Lodge. They learn from their father that Mr. Carford used to live at the Snow Lodge with his nephew, Dave, until a large sum of money went missing. Mr. Carford accused Dave of stealing the money, but Mr. Bobbsey knows that isn't true. Can the twins discover what really happened to the missing money and reunite the lonely Mr. Carford with his nephew?