Since making his feature directorial debut in 2002 with 'The Salton Sea,' D.J. Caruso has slowly but steadily infiltrated the mainstream with one project or another that combines an independent sensibility with commercial appeal. His last two films, 'Disturbia' and 'Eagle Eye,' were both big hits, and earned him the box office cred to tackle an even bigger project: 'I Am Number Four,' a highly-anticipated adaptation of the best-selling book by Pittacus Lore (also known as Jobie Hughes and James Frey).

Cinematical recently sat down in Los Angeles with Caruso for a chat about 'Number Four,' whose trailer premieres on Friday, December 10. In addition to talking about the challenges of adapting a book that was still being finalized at the time production started, Caruso offered some insights about the challenge of creating something original within the science fiction canon, and examined his own evolution as a filmmaker whose work ventures ever closer into the commercial mainstream.