The double helix /
Trueit, Trudi Strain,
The double helix / Trudi Trueit. - 215 pages : color illustrations, maps ; 24 cm. - Explorer Academy ; book 3 . - Trueit, Trudi Strain. Explorer Academy ; bk. 3. .
"Under the stars."
As Cruz and his friends continue to search for the third piece of the cipher, a mysterious message arrives suggesting that someone close to him is working for Nebula, leaving Cruz unsure of who he can trust.
9781426334580 1426334583 9781426334597 1426334591
Ciphers--Fiction.
Mystery and detective stories.
Explorers--Juvenile fiction.
Boarding schools--Juvenile fiction.
Schools--Juvenile fiction.
Code and cipher stories.
Action and adventure fiction.
Detective and mystery fiction.
The double helix / Trudi Trueit. - 215 pages : color illustrations, maps ; 24 cm. - Explorer Academy ; book 3 . - Trueit, Trudi Strain. Explorer Academy ; bk. 3. .
"Under the stars."
As Cruz and his friends continue to search for the third piece of the cipher, a mysterious message arrives suggesting that someone close to him is working for Nebula, leaving Cruz unsure of who he can trust.
9781426334580 1426334583 9781426334597 1426334591
Ciphers--Fiction.
Mystery and detective stories.
Explorers--Juvenile fiction.
Boarding schools--Juvenile fiction.
Schools--Juvenile fiction.
Code and cipher stories.
Action and adventure fiction.
Detective and mystery fiction.