Lacks cohesiveness and  overly ambitious
"I Am Number Four"  is an action science-fiction thriller with an interesting premise.  Number Four (Alex Pettyfer) is an alien whose home planet, Lorien, was destroyed by an evil race of hit men called the Mogadorians.  Four is one of nine Lorien children sent to Earth to escape their planet's destruction.  Legend says that they will eventually gain enough power to vanquish the Modadorians.  So the Mogadorians have tracked them to Earth, intent on wiping out all nine.  One, Two and Three have already been killed.  Four must act quickly and decisively, but first he must hide in plain sight.  How?  By enrolling in his local high school.<br /><br />This movie is all over the place and far too ambitious.  Sometimes it aspires to be "The Matrix," other times "The X Files," and still others a John Hughes flick.  Bonus extras on the Blu-ray/DVD/Digital Combo Pack include a making-of featurette, bloopers, and six deleted scenes.
The movie title "I Am Number Four (Three-Disc Blu-ray/DVD Combo + Digital Copy)," available on Movies & TV, has received an average rating of 4.6 from 7696 reviewers. 
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 {"Genre": "Action & Adventure", "Format": "Blu-ray, Digital_copy", "Contributor": "Reuben Langdon, Greg Townley, Dianna Agron, Teresa Palmer, Jake Abel, Jeff Hochendoner, Emily Wickersham, Patrick Sebes, D.J. Caruso, Callan McAuliffe, Timothy Olyphant, Kevin Durand, Alex PettyferReuben Langdon, Greg Townley, Dianna Agron, Teresa Palmer, Jake Abel, Jeff Hochendoner, Emily Wickersham, Patrick Sebes, D.J. Caruso, Callan McAuliffe, Timothy Olyphant, Kevin Durand, Alex Pettyfer  See more", "Language": "French (Dolby Digital 5.1), Spanish (Dolby Digital 5.1), English (DTS-HD High Res Audio)", "Runtime": "1 hour and 49 minutes", "Aspect Ratio": "1.85:1", "Is Discontinued By Manufacturer": "No", "MPAA rating": "PG-13 (Parents Strongly Cautioned)", "Product Dimensions": "7.5 x 0.7 x 5.4 inches; 5.6 Ounces", "Director": "D.J. Caruso", "Media Format": "Blu-ray, Digital_copy", "Run time": "1 hour and 49 minutes", "Release date": "May 24, 2011", "Actors": "Alex Pettyfer, Timothy Olyphant, Dianna Agron, Teresa Palmer, Callan McAuliffe", "Dubbed": "French, Spanish", "Subtitles": "French, Spanish, English", "Studio": "Touchstone Pictures/ DreamWorks", "Number of discs": "1"}

Here is a brief synopsis of the title : Three are dead. Who is Number four? From Director D.J. Caruso (Disturbia), producer Michael Bay (Transformers) and the Emmy-winning writers of TV's Smallville, comes this gripping, action-packed thriller. John Smith (Alex Pettyfer) is an extraordinary teen masking his true identity to elude a deadly enemy sent to destroy him. Living with his guardian (Timothy Olyphant) in the small town he now calls home, John encounters unexpected life-changing events - his first love (Dianna Agron, TV's Glee), powerful new abilities and a secret connection to the others who share his incredible destiny. Complete with deleted scenes and more, I Am Number Four is an explosive suspense-filled ride that will take you to the edge of your seat and beyond..