Although 'I Am Number Four' is based on a bestselling young-adult book by Pittacus Lore (the fictional pen name of James Frey and Jobie Hughes), there's a chance your tween or teen hasn't read it. If that's the case, what better way to motivate them to read than to promise them a trip to the movies afterward?

What's the story?: The book is told from the perspective of 'Number Four,' an adolescent alien that hails from the planet Lorien. Four, aka John Smith, is one of only nine young aliens (plus their assigned Keepers) who were sent to Earth before Lorien was destroyed by Mogadorians, greedy and sadistic aliens from a neighboring planet. Each of the children possessed special powers, or "Legacies," that would help them live long enough to eventually restore the Lorien race. The chosen nine were assigned a number and a special protective charm that would only allow them to be killed in number order; when one is killed, the survivors receive a magical scar. When the third scar appears on John's leg, he knows he's next on the Mogadorians' hit list. In an attempt to evade the Mogadorians, John and Henri move to Paradise, Ohio -- a small town where John enters the local high school and falls for a local girl.