Season 5 - Episode Guide

Wild night in Las Vegas has the CSIs simultaneously investigating four fatalities.

.Heavy rain in Las Vegas causes the CSI team to investigate the demise of victims found in the sewage drains.

.The CSI team investigates the kidnapping of a young girl.

Catherine and Nick delve into the dark world of hazardous cosmetic procedures to keep people looking young, while Grissom, Sara and Greg investigate a man found dead in a house tented for termites.

The CSI team investigates a suburban murder with a sexual twist.

Grissom is haunted by the return of the blue paint serial killer that got away two years ago.

Grissom works with a new CSI from the dayshift on an apparent kidnapping from a high school formal held at a Vegas casino.

A murder investigation leads the CSI team to explore the world of trangenders, which turns into the ultimate case of mistaken identity.

An undetected piece of evidence in an old murder case has the graveyard shift under internal investigation.

Tension rises as the CSI teams adjust to their new assignments while investigating two vastly different murders.

The CSIs investigate the murder of a Sherlock Holmes enthusiast in his perfectly re-created Victorian Era Baker Street study.

Catherine and Nick delve into the dangerous world of a Mexican band with a cult-like following, while Warrick and Sofia investigate a man found dead in a handicapped van.

The CSIs discover two female corpses that turn out to be part of an undercover Russian mail-order bride operation.

The CSIs suspect third party involvement in the murder of a hunter and a bear found in the outskirts of Las Vegas.

Grissom and Catherine's teams work together to discover the truth behind the death of a larger-than-life casino owner.

The CSIs search for a murderer at a convention for overweight adults.

Grissom and his team use new technology to process a fingerprint from an old crime scene while they investigate a serial killer.

Wild day in Las Vegas has the CSIs simultaneously investigating four fatalities.

Captain Brass goes to Los Angeles to investigate a case involving his estranged daughter.

Grissom and Sara investigate the brutal murder of an inmate at a locked-down state mental hospital.

The man Catherine flirts with at a bar comes back into her life as a suspect in a murder investigation.

The CSIs find themselves immersed in university life when a couple of amorous freshman are found dead in a college dormitory.

The CSIs are in a desperate race against time to save a member of their team.

The CSIs are in a desperate race against time to save a member of their team.