On standardized test day, Meredith and Principal Carl are distracted by the arrival of their ex-spouses.
Greg and Nick investigate the death of a 16-year-old girl with ties to a brothel.
When the CSIs investigate a triple homicide, Russell has to find a way to connect with a 6-year-old girl who was the sole survivor and witness.
D.B. Russell leads the CSI team on a hunt to find his kidnapped granddaughter.
