Michaela Mann

When pupils start to go missing from Smallville High, Clark steps in to investigate. All evidence points to the school photographer, who Clark later discovers has created a secret "school" in which he keeps the students hostage so that he can keep reliving the glory days of high school. While Clark tries to free Chloe and the other kidnapped pupils, Lex and Lionel are captured by the Teagues in an effort to find the crystal.

Still distraught over her break-up with Clark, Lana experiments with a dangerous serum that allows her to flatline and see her deceased parents again. A worried Clark rushes to save Lana from hurting herself but ends up being injected with kryptonite-laced serum by an arrogant medical student. When Clark flatlines, he is able to talk to his dead father, who warns him that Lionel knows his secret.