The 39 clues mission one

Answer 1

The book code is lemur, like the animal.

Answer 2

In the first mission of The 39 Clues series, titled "The Maze of Bones," the Cahill siblings Dan and Amy embark on a global treasure hunt to uncover the secret of their powerful family's heritage. Along the way, they face various challenges and puzzles left by their ancestors, ultimately leading them to important historical locations and secrets. The mission sets the stage for the larger overarching story of the Cahill family and the hunt for the 39 clues.