We see the raw desperation of a hero who realizes too late what he’s losing. Clark finally resolves to tell Lana his secret to save her from a loveless marriage, only to have his hopes crushed by a literal closed door.
What sets "Promise" apart from your standard CW drama is its unique structure. The episode tells the story of the wedding day three separate times, each from the perspective of the main players:
The title "Promise" refers to more than just the wedding vows. It’s a web of conflicting oaths:
A hollow vow of love built on a foundation of lies and a fresh murder. The Aftermath
Here, we witness the "Luthor" in Lex. Threatened by Dr. Langston over the truth behind Lana’s pregnancy, Lex resorts to cold-blooded murder in the church crypt, proving he will do anything to keep his "prize."
A deadly vow to Lex that Lana will be at the altar, and a threat to Lana that he will kill the man she loves.
In the legendary 10-season run of , few episodes pack as much emotional punch and narrative weight as "[S5E3] Promise" . While technically listed as the 16th episode of the sixth season in official guides, the "promise" of this episode is one that fans had been waiting for—and dreading—since the pilot: the marriage of Lex Luthor and Lana Lang. A Triptych of Perspectives
She tells Clark, "I'll be there, I promise," referring to their meeting at the barn—a promise she is forced to break.