Gone (Gone Series #1)

by Michael Grant
Lexile:  620
Genre:  Science Fiction

Growing up in Perdido Beach, CA, Sam Temple has led a pretty normal life.  Until, one day in the middle of class, his teacher disappears.  Poof!  There one second, gone the next.  The class is stunned, but things get really strange when they realize that everyone in the entire city over the age of 15 has disappeared as well. Sam and others are left to figure out the mystery.  Where has everyone gone?