Heat Vision is reporting that Glee's Dianna Agron has signed on for the female romantic lead in the D.J. Caruso-directed I Am Number Four, DreamWorks' adaptation of the upcoming young-adult science-fiction book by James Frey and Jobie Hughes.
I Am Number Four revolves around a group of nine aliens who escaped their home planet just before it was annihilated by a rival species. Hiding out on Earth, the title character, to be played by British actor Alex Pettyfer, disguises himself as a human high schooler, only to discover he's still being hunted by his planet's enemy.
Agron will play a girl dating a high school jock who falls for Number Four and becomes his confidante.
I Am Number Four is scheduled to begin principal photography next month in Pittsburgh.