[s13e13] Cure ★ High-Quality

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

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

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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.

The episode reveals Dr. Knox is centuries old, having previously gone by names including Jack the Ripper. Dean Cain, who famously played Clark Kent/Superman in

The Martian Manhunter (John Jones) warns Clark that Kara (Laura Vandervoort) cannot be trusted, revealing that her father, Zor-El, tried to kill Jor-El. Kara actively works against Clark to find her spaceship crystal.

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