Plastique

Plot:

Clark's first day on the job at the Daily Planet begins with a bus exploding right outside the building, which leads him and Lois on a trail of someone who might be infected by kryptonite. Chloe finds a runaway teenage girl, named Bette, whom Chloe suspects is involved in the explosion when Bette (whom will later become the fire-starter Plastique) has the meteor-rock power of pyrokinisis. In the meantime, Chloe also meets a local medic, named Davis Bloom, who takes an interest in her, even though she's engaged to Jimmy Olsen. Elsewhere, Tess meets Clark for the first time as she takes over the Daily Planet in Lex's absence and immediately senses something not right about him.