Grissom investigates the case of a man believed to be a suicide at the hands of a bullet wound, but comes to believe that the man may have been murdered.
Brass must deal with the fallout over the Holly Gribbs incident. Grissom takes on late-night duties, and must contend with Catherine's growing discontent over his handling of the Gribbs case, which includes an investigation into Warrick's possible involvement. Nick and Grissom also look into the alleged suicide of a slot machine jackpot winner.
Grissom, Sara and Nick look into the death of a wealthy man who was kidnapped and buried in the desert while still alive. Catherine and Warrick try to piece together a little child's hit-and-run murder.
Grissom and Catherine investigate the case of a dead woman who is found in a lake.
A naked man is found dead in the desert with no obvious cause of death, a school dean is murdered, and a dead body found in a dumpster was supposedly buried the week before.
Grissom and Nick are summoned to identify a woman and track down her killer. Sara and Warrick investigate a cop shooting.
A family is butchered by an apparent cult, but the two daughters of the family are left alive. It is soon discovered that the father had a relationship with his young daughter that producer a child.
A serial killer taunts Grissom by leaving him clues; Nick and Warrick argue when they investigate a car accident.
Grissom and the CSI team look into the death of a first class flight passenger en route to Las Vegas.
Grissom and Sara investigate a murder in the mountains; Catherine and Warrick investigate a theft.
Grissom attempts to clear a death row inmates name; Catherine and Nick investigate the brutal murder of a teenager.
The bombing of a office building becomes the focus of an investigation by Sara and Warrick while Nick is suspected of killing his prostitute friend.
Grissom and Catherine find part of a human skeleton in the desert and try to round up the remaining bones. Warrick and Sara look into a wedding party gone bad, one which produced a male stripper corpse.
A corpse is found floating in a pool and the team investigates the death; Warrick investigates a mob killing.
The team tries to find the attacker of a sexual assault victim who was found brutalized in a mall parking lot. Catherine and Warrick attempt to sift through a case with an immediate trial start date.
A robbery homicide investigation links to a old kidnapping case and a woman is found incinerated and Sara suspects it might be spontaneous combustion.
The team struggles to obtain evidence from an apparent carjacking after heavy rain washes much of it away. Catherine is puzzled when a building collapses.
The entire team investigates the kidnapping of a wealthy couple's baby. Suspicion immediately falls on the child's parents.
Private information about Grissom's personal life comes to light during a troubling investigation of a local deaf man who has killed in an automobile accident. Katherine and Nick investigate a coffee house shooting where a former casino owner is killed.
Grissom investigates a jogger's death. Catherine attempts to uncover the cause of death of a little girl on a carnival ride.
The CSI team investigates a decapitated human corpse and a head found in different places. A murder takes place in a juvenile detention center.
The team investigates the murder of a young woman who they believe was killed by a serial stranger in Las Vegas.