Left alone when Rush, Mark, and Mona go away to boarding school, Randy and Oliver are lonely and bored until a mysterious letter brings the first of many clues to a mystery that takes all winter to solve.
- ISBN10 1250102863
- ISBN13 9781250102867
- Publish Date 10 November 2015 (first published October 1970)
- Publish Status Active
- Imprint Square Fish
- Format eBook
- Language English