Youth leaders today are frustrated. Their once-burning desire to see souls and lives changed is flickering. But gifted youth leader and evangelist Greg Stier offers hope. In Outbreak he draws on the example of 'viral marketing' in business to illustrate the idea of 'viral evangelism.' According to Stier, teens are desperate to do something radical. If we equip them to be contagious, unstoppable Christians like those in the book of Acts, a major revival is sure to follow.