Christian has an identical twin, and the twin is the Carver. This is how I know:
1. I generally thought that Kit had planted evidence, thus the matching DNA in the condom. However, that was just an assumption; it was never cleared up. An identical twin would share Christian’s DNA.
2. The Carver couldn’t cut Christian’s face. Because it was his own?
3. Peep the Carver’s site at www.myspace.com/thecarver. The whole point of the site is to give you clues. Under interests:
The Wally Lamb refrence under “Books”… Wally Lamb’s second novel I Know This Much Is True is about identical twin brothers from a horribly abusive family, one of whom ends up emotionally detached and the other of whom ends uf being a paranoid schizophrenic into public self-mutilation. (As a stretch, could the obese “Mama” from the first ep. of the season be a vague refrence to Lamb’s first book, She’s Come Undone?) I pulled out the Wally Lamb refrence because it was emphasized in the list.
3. The Carver obviously has a specific vendetta against Christian and what he does. He doesn’t want Christian to have anything good in his life, thus his kidnapping of Kimber (who I doubt is going to go back to him after she is found. Spoilers.). Perfect M.O. for a forlorn twin who wasn’t able to live the life his (or her) brother did.
Once you get going on the theory, it all seems to fall together. Let me know what you think. Courtney, you do not count… you can’t handle the Tuck.