It is discovered that Dr. Knox is actually an immortal serial killer who harvests organs from his patients to keep his ageless wife, Sophia, alive.

In a nod to his former role, Cain's character uses a handkerchief with the initials "C.K." in the opening scene. [S13E13] Cure

Dean Cain, who famously played Clark Kent/Superman in the 90s series Lois & Clark: The New Adventures of Superman , appeared as the villainous Dr. Curtis Knox. Key Takeaways & Trivia It is discovered that Dr

Lex Luthor hires Knox, believing his work is legitimate. He is unaware of the murderous side effects, making it another instance where Lex's pursuit of power blinds him to the morality of his partners. Dean Cain, who famously played Clark Kent/Superman in

"Cure" was generally well-received for its darker tone and for utilizing the "meteor freak of the week" formula in a more character-driven way. Critics appreciated the tension between Clark and Chloe, as well as the surprise assistance from Lex. If you'd like to explore more about this episode, I can: