The CW’s official description for “Warrior,” airing on Friday, January 29th:

METROPOLIS HOSTS A COMIC BOOK CONVENTION — DC COMICS’ CHARACTER ZATANNA RETURNS

Clark (Tom Welling) meets Zatanna (guest star Serinda Swan) at a comic book convention, where she tells him her father charmed a copy of the comic book “Warrior Angel” and it holds magical powers. A young man named Stephen (guest star Carlo Marks) steals the comic book and develops super powers, transforming himself into Warrior Angel and saving Chloe (Allison Mack) from a horrible accident. Meanwhile, Lois (Erica Durance) becomes jealous of Clark’s relationship with Zatanna. Allison Mack directed the episode written by Bryan Q. Miller (#3X5261).

Thanks to “KryptonSite“.