I've been thinking about a story I read years ago. Not sure how it all went, but I think Clark goes to an alternate dimension where he discovers an underground movement who is working to stop a Kal who is, for some reason, trying to kill Lois. I'm not sure, but I think Kal and Lois had been in a romantic relationship that had gone bad thanks to Lex Luthor.
Anyone have any idea what I'm talking about?
ML