when does lana find out about clark in smallville
Lana Lang (Smallville) During the second meteor shower, Lana witnesses the landing of an alien spacecraft, and two alien beings emerging and killing everyone in sight in the season five premiere.[20] The spaceship becomes Lana's primary focus in season five, officially teaming up with Lex Luthor to discover the mystery behind the ship in the episode "Splinter".[21] When her relationship with Clark hits a breaking point in season five's "Hypnotic",[22] she begins to grow closer to Lex.[23] The relationship with Lex eventually leads to marriage in the season six episode "Promise", but not before Lana discovers Clark's secret and realizes why he has been lying to her all these years.[24] When she learns that Lex set up a fake pregnancy in order to get her to marry him in the season six finale "Phantom", Lana effectively ends the marriage and fakes her own death to escape Lex after he threatens her. She also frames Lex for her murder, to punish him for his betrayal.[25] It is revealed at the start of season seven that her effort fails, but as part of the "settlement" of their divorce, Lex makes sure that Lana does not go to jail for her actions.[26]