Smallville: Freak

Lana has deduced that Clark is super-powered and thinks that it is because he is a meteor freak - but that is a more plausible explanation than extraterrestrial origin. See here. Tobias honestly tells Lana that Clark is normal because he detects meteor freaks, which Clark is not, but Chloe is although we do not know her power yet.

Lana conceals information about Clark from Lex while Lex seriously lies to Lana. Lex has stopped being a good guy while Lionel has become one.