Tom Welling - It's not something that Lex planned or that the audience...

It's not something that Lex planned or that the audience may have known or have hints about in the future like sometimes happens in episodic television. This is a complete surprise for everyone. And I literally didn't know who it was until I read the script. I actually thought it was between two different people until I read the scripts. And I was right, this person was one of those two people, but I didn't know for sure.