Spymasters (The 39 Clues: The Cahill Files)
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Author: Riley, Clifford.
- Publisher: Scholastic Inc.
- Pages: 256
- Publication Date: 2013-04-30
- Binding: Paperback
- MSRP: 12.99
- ISBN13: 9780545564687
- ISBN: 0545564689
- Language: en
- Store Location: Chapter
- "Book cover image may be different than what appears on the actual book."