The Boxcar children are attending an Invention Convention at the home of an eccentric artist known for her one-of-a-kind clocks. The clocks sound loudly at every hour. But the clocks aren't the only noise the kids hear at midnight.
| ISBN: | 9780807555385 |
| Publication date: | 1st January 2003 |
| Author: | Gertrude Chandler Warner |
| Illustrator: | Hodges Soileau |
| Publisher: | Albert Whitman & Company |
| Format: | Paperback |
| Pagination: | 137 pages |
| Series: | Boxcar Children Mysteries |