The lab utilizes a hyperspectral imaging prototype to analyze blood samples and "human conversation recovery from leaf vibrations" to track the killer—a plot point that drew mixed reactions from critics for its realism.
While Paul Winthrop is apprehended, the episode ends on an emotional note as the team says goodbye to Nick Stokes, who leaves a "SOLVED" placard over his name as he departs the lab for the last time. Cast and Production
The CSI unit engages in a final, lethal showdown with the Gig Harbor Killer , Paul Winthrop.
