Smallville - Season 8 Episode 19 : Stiletto 2011

Lois believes that she needs a big story to secure her reputation as a star reporter but the red/blue blur continues to elude her. However, after Chloe is mugged, Lois steps in to fend off one of the attackers and uses the opportunity to pretend a new superhero, Stiletto, has come to town and is giving exclusives to Lois. Clark is concerned Lois will hurt herself pretending to be a superhero but after he is captured by thugs with kryptonite, Lois steps in to save the day.