Jimmy catches a red and blue blur on film when he takes a picture of Clark saving Lois from a mugger; after Tess decides to run the picture on the front page of the Daily Planet, Clark fears his identity will be discovered.

Previously on Smallville: Jimmy vowed to find out who has been running around Metropolis saving people.  Davis was exonerated from charges that he was a serial killer, in spite of the fact that he actually IS a serial killer.In this episode of Smallville, Clark is worried that his secret will be revealed by Jimmy, who finally figures out that Clark has super powers. Unfortunately, Clark is also a douche who likes making people who are smart look like idiots.
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