The countdown conspiracy

"Miranda Regent can't believe she was just chosen as one of six kids from around the world to train for the first ever mission to Mars. But as soon as the official announcement is made, she begins receiving anonymous threatening messages . . . and when the training base is attacked, it looks like Miranda is the intended target. Now the entire mission--and everyone's lives--are at risk. And Miranda may be the only one who can save them"--Provided by publisher.