Struck by lightning, Clark's power was transfered to Lana by the help of a meteor rock. And with the power she had she can do whatever she want....and that includes her obsession.

See how power can bring out the devil in a man. Watch Smallville Season 7 Episode 7 and follow the life of the young Superman in his way to save the world!!!

http://www.sidereel.com/Smallville?missingWatchlink=true