The Dead of Night: The 39 Clues: Cahills vs. Vespers Book 3
The Vespers have ordered Amy and Dan to find a legendary map that belonged to Marco Polo, and the hunt takes them to Eastern Europe where they make a terrifying discovery about one of their supposed "allies."
| Country | USA |
| Brand | Audible |
| Manufacturer | Scholastic Audio |
| Binding | Audible Audiobook |
| Format | Unabridged |
| ReleaseDate | 0000-00-00 |
