Into the gauntlet /
[by] Margaret Peterson Haddix.
- New York : Scholastic, 2010.
- 327 p. : ill. ; 20 cm. + 6 game cards.
- 39 clues ; bk. 10 .
- The 39 clues ; bk. 10 .
After a whirlwind race that's taken them across five continents, Amy and Dan face the most difficult challenge yet. When faced with a choice that could change the future of the world, can two kids succeed where 500 years worth of famous ancestors failed?