From the cover: It looks like it's going to be a long and lonely winter for Randy and Oliver Melendy. Their big old house feels empty without their older sister and brothers for company. Then a surprise message in the mailbox sets the scene for a trail of excitement and adventure. Now the dreary winter has turned into a season of suspense. How many messages will they find? Does a treasure await at the end of this mysterious hunt?
This is the last book in this 4 book series about a family of 4 children (later 5), their father, and their housekeeper. This series has been well-known and well-loved by many readers of all ages. This is one of my all-time favorite series and this book in particular is a favorite!!!