Alex Pettyfer talks to us about making I Am Number Four and the pressures of being a leading man in a big Hollywood blockbuster at the age of 20. He also discusses working with Glee's Dianna Agron, and why he intends to remain out of the media glare so he can continue to perfect his craft as an actor.

What was the initial appeal of I Am Number Four?

Alex Pettyfer: I think the biggest appeal was [my character] John. He was this dynamic character who had so many layers to him. I loved the fact that he starts off as this insecure man and then becomes this warrior. I amor that transition that he...