The Extreme Team 10 On the Edge Author:Matt Christopher avier 'X' McSweeney has been working hard to conquer his fear of heights. Ben, an experienced rock climber, is teaching him how to boulder across the surface of a gigantic rock. X arranges for Ben to teach his friends Bizz Juarez and Jonas Malloy about rock climbing, too, but at the last minute Ben can't make it. Rather than disappoint his frien... more »ds, X decides to show Bizz and Jonas what he's learned... It's a decision that nearly leads to disaster.« less