Whoever said that Lois and Clark were the
good guys in every universe? Either something wicked this way comes, or Lois and Clark have gone through the looking-glass into a world that has reason to beware the Superman. Why? Well, figuring that part out is half the fun, isn't it?
RULES:1) Either Lois/Clark visit the universe of their evil counterparts, or Evil Lois/Clark visit the main canon.
2) Set in S4 or later
3) Lois and Clark (or Evil Lois and Clark) must spend most of the story in separate universes from each-other.
Canon Lois and Clark must be from season 4 or later, and the canon universe must be in season 4 or later. What's going on in the Evil universe, however, is entirely up to you.
Good Luck!