Ummm, I don't know that the Proof series meets all the criteria. What about the nfic version of Revisionist History? That one has an A plot (hopefully with some suspense and action), there's no Luthor or Scardino, Lois finds out before Clark tells her and it has a happy ending. laugh

Lois: You know, I have a funny feeling that you didn't tell me your biggest secret.

Clark: Well, just to put your little mind at ease, Lois, you're right.
Ides of Metropolis