S4E15
Episode 15: Sacred
⚠ Spoiler alert This recap gives away what happens in this episode.
Episode Summary & Review
The day after Dr. Swann dies, Clark receives a note from the professor leading him to a message from Jor-El that instructs him to find two sacred stones. Meanwhile, Jason and Lex are in China on a related mission; and Lana learns that the witch Isobel has been trying to find the stones by using her as a vessel.