|材料类型：||小学和初中, 小说, 有声书，等, 中学（高中）, 录音|
Jeff Hirsch; David Pittu; Playaway Digital Audio.; Findaway World, LLC.; Scholastic Inc.
|注意：||One set of earphones and one AAA battery required for listening.
Title from Playaway label.
Release date supplied by publisher.
Previously released by Scholastic, Inc.
Issued on Playaway, a dedicated audio media player.
|演员：||Narrated by David Pittu.|
|描述：||1 audio media player (4 hr., 40 min., 33 sec.) : digital, HD audio ; 3 3/8 x 2 1/8 in.|
|丛书名：||39 clues., Unstoppable., bk. 2.|
Dan and Amy are facing their greatest threat yet: an enemy who has found a way to use the source of the Cahill family power against them. To stop him, Dan and Amy must set out on a desperate mission that will take them from one of the world's hottest regions all the way to the frozen blast of the Arctic Circle. But with the enemy closing in, Dan finds himself facing the one terror he never imagined: being betrayed by his own sister.