Oh, Lord, Help Me! Not Another Deliciously Dark AU!
So, take certain thematic elements from The Devil's Double and apply them to a Smallville AU where Clark Luthor and his alt-verse papa got a hold of, and activated, the mirrorbox years earlier than in canon. So, basically, SV!Clark is forced to act as alt!Clark's body double/twin for the sake of the Kents, Lana, Lois, etc., and wickedness ensues. And then there's alt!Clark's mysterious "real" brother, Alexander. . .
Huh? :)
Huh? :)