![Houseboat Mystery (The Boxcar Children Mysteries #12)](http://aesopsfable.com/cdn/shop/products/9780807534137-768x1115_{width}x.jpg?v=1557492476)
Floating down a lazy river, Benny finds a blackmail scheme in progress.
- Paperback: 128 pages
- Publisher: INDPB; Reprint edition (January 1, 1990)
- ISBN-13: 978-0807534137