5x18: Csi Las Vegas

The "paper" or core plot of the episode involves a complex investigation into a fire at a construction site:

: How the show's portrayal of forensic science influences real-world juror expectations and investigative procedures. CSI Las Vegas 5x18

The episode you are referring to is Season 5, Episode 18, titled " Spark of Life ," which first aired on March 31, 2005. Episode Summary The "paper" or core plot of the episode

CSI Careers: How Real is TV? | CCU Online - Colorado Christian University titled " Spark of Life