The detectives hunt for a serial killer involved in a series of double homicides. Nick discusses specifics of the case which end up on the local news.
Grissom finds two of his murder suspects shot to death while their house is under surveillance; Catherine and Sara investigate the death of a college student found in his shower.
Grissom and Warrick work a the scene of a dead woman that has been mummified; across town, Nick and Sara work on a similar crime scene.
A child dies after being loked in a car; a young woman's body washes up on the beach.
After a woman is killed in a head-on collision with a big rig, Catherine and Grissom discover the dead body of a man dressed in a full-size raccoon costume across the road.
Grissom goes to a small town in Nevada to investigate a the murder of a man found buried up to his neck; Catherine receives a check from her father.
The CSI team must find new evidence in a rape/murder case when the key evidence in thrown out in court.
Catherine takes over the case of a missing model when the prime suspect, a photographer, shows interest in her and won't speak to anyone else.
The CSI team investigates a car bomb explosion and the death of a musician's wife.
A teenage body is discovered at a construction site and the murder weapon is revealed to be a hammer. Nick looks into the gunshot death of a woman in her home.
A member of a jury is found dead during deliberations on a murder trial; the sister of a woman who disappeared four years earlier comes forth with new evidence in the case.
Grissom investigates the murder of a nurse who bears a resemblance to Sara; the team finds the remains of their prime suspect in various garbage cans soon after.
The team investigates when a 17th century sword is stolen from a Japanese art collection; a woman is found dead with bite marks on her neck and the team is led to an underground world of blood-drinking goths.
The CSI team investigates a shootout robbery in a grocery store with multiple victims and learns that it may be an inside job.
The CSI team investigates the execution-style murder of a wealthy entrepreneur and his wife in the driveway of their own home.
A man is found brutally stabbed to death in a bad part of town and is soon linked to a halfway house and a world of drugs and addiction; Willows and Sidle investigate the murder of a man who worked as a clown.
A woman's dismembered body is found tied to the underside of a prison bus; Grissom investigates a stabbing homicide and finds out thtat the victim was a compulsive gambler.
A man beats another man to death with his bare hands. While in custody, the suspect attacks Grissom and then dies mysteriously.
The team investigates a house fire that claims the life of a teenage girl; a man at a gaming tournament is found dead with an 'S' tile lodged in his throut.
Evidence collected during a murder investigation reveals that all the victims and suspects are police officers.
When a roller coaster accident kills six people The CSI team tries to determine whether there was foul play at hand.
Two gamblers are found dead shortly after scamming $400,000 off one of Sam Braun's casinos, making Braun a suspect.
A rape victim identifies her attacker, but when the team investigates, they find that the DNA evidence suggests otherwise.