A woman's head is discovered in a newspaper dispenser, and when Dr. Robbins does his post-mortem he finds a startling clue - a dead snake resting in the victim's mouth.
Grissom is shocked to discover the prime suspects in his ongoing homicide investigation shot to death in their house. But what is more surprising is that their murder points to an inside job.
When Grissom and Warrick arrive at a burglary scene, they are shocked to discover the mummified corpse of an elderly woman locked in a closet from a prior home invasion.
A feverish night in Las Vegas results in one dead male in an alien suit, one more dead male in a bathtub, one dead female with two suspicious men at the scene, and another dead male with a polaroid of yet another dead male.
A casino employee is beaten and raped on her way home from work, but she survives and identifies her attacker. Grissom and his team struggle to find the physical evidence to convict the perpetrator when it points in a different direction.
Grissom is called to investigate the murder of a 17-year-old in a casino penthouse. The entire team gets involved when it's discovered that a kidnapping took place along with the murder.
The CSI team works backwards from the gruesome discovery of a human eyeball to discover that a missing woman has been murdered, and both her husband and teenage daughter have shocking motives to want her dead.
Grissom and his crew handle their highest profile case to date when the city's former chief of detectives is slain execution-style in his house following a wild party.
A deadly bomb explosion at a Vegas office building sends Grissom and the CSI team in search of a serial bomber. Their primary suspect is the building's overly helpful security guard, who knows more than he should about blowing things up.
Grissom and Catherine investigate when a leg is found severed from a body in a lake. Meanwhile, Sara and Nick investigate a fraternity pledging gone terribly wrong.
Grissom and Brass track down a serial killer who stages his murders so that they appear to be suicides. Meanwhile, Willows and Brown investigate a robbery and a homicide.
Catherine violates department protocol when she takes the case of a rape accusation against her ex-husband. Meanwhile, Warrick and Sara search for the missing bullet that will either exonerate or indict a cop for murder.
Grissom and his team are called to investigate a multi-million dollar art robbery, while Catherine and Warrick investigate the death of a woman with a bite to her jugular.
A woman found murdered in her home. Her resemblance to Sara causes Grissom to take a personal interest in the case and forces him to examine the decisions he has made in his life.
Catherine and the team find what's left of a body tied beneath the undercarriage of a prison bus and must determine whether this is an escape gone horribly wrong, or murder.