Enter the world of the little-known and even less understood heroes of police work in Las Vegas -- the forensic investigators. Led by veteran Gil Grisson, the remarkable team assigned to the Criminalistics Bureau's graveyard shift must combine cutting-edge scientific methods with old-fashioned detective savvy as they work to untangle the evidence behind the yellow police tape. Far from the glittering lights and 24/7 spectacle of the Strip, the Las Vegas Crime Lab's team of investigators is gearing up for a rough night ahead. A brutal shooting at a cheap motel may be business as usual for CSIs Catherine Willows and Nick Stokes, but as they process the crime scene and quickly identify the victim as a noted local private investigator, nothing could prepare them for the shock of finding physical evidence belonging to none other than their own respected colleague Detective Jim Brass. Meanwhile, CSIs Greg Sanders and Riley Adams are called to a nearby airport where they must face the ultimate locked room mystery: how a pilot flying solo in a small private plane wound up murdered while miles above the ground…

Far from the glittering lights and 24/7 spectacle of the Strip, the Las Vegas Crime Lab's team of investigators is gearing up for a rough night ahead.... A brutal shooting at a cheap motel may be business as usual for CSIs Catherine Willows and Nick Stokes, but as they process the crime scene and quickly identify the victim as a noted local private investigator, nothing could prepare them for the shock of finding physical evidence belonging to none other than Detective Jim Brass.... Meanwhile, CSIs Greg Sanders and Riley Adams are called to a nearby airport where they must face the ultimate locked room mystery: how a pilot flying solo in a small private plane wound up murdered while miles above the ground....

Meet the little known and even less understood heroes of police work in Las Vegas -- the forensic investigators. Led by veteran Gil Grissom, the remarkable team assigned to the Criminalistics Bureau's graveyard shift -- including Catherine Willows, Warrick Brown, Nick Stokes, and Sara Sidle -- must combine cutting-edge scientific methods and old-fashioned savvy as they work to untangle the evidence behind the yellow police tape. While Nick and Catherine investigate a newly discovered fifteen-year-old murder, Grissom and the rest of the team must uncover the indentity of a cold-blooded killer -- one whose execution-style, "double-tap" signature has provoked the interest of FBI agent Rick Culpepper.

Based on the Emmy Award-winning TV series, this edge-of-your-seat thriller follows the savvy and remarkable team of forensic investigators led by veteran Gil Grissom as they use the latest cutting-edge technology to track down a mysterious killer from the past. Ten years ago, Las Vegas was terrorized by a vicious and bloodthirsty serial killer responsible for nearly half a dozen brutal murders. But after two years of keeping the city in a panic, the killer mysteriously vanished and has not been heard from…until now. Gil Grissom and his CSI team are called in to investigate a homicide that perfectly fits the notorious criminal’s modus operandi. But all hell breaks loose when a reporter made famous by the original cases receives a letter from someone claiming to be the very same killer—but he insists that he had nothing to do with the latest slaying. Now the CSI team must stop someone who may be a copycat killer from striking again, even as a murderer from the past continues to evade capture, and isn’t taking too kindly to rivals.

Luck is on the side of most during the incident at the Four Kings Casino and Hotel, when the simmering tension between two rival biker gangs suddenly boils over into all-out violence -- miraculously, there are only two fatalities despite the hundreds of rounds fired on the casino floor. Called to an out-of-control crime scene -- located outside Las Vegas in the legendary town of Boot Hill -- forensic investigators Gil Grissom, Catherine Willows, Nick Stokes, and Sara Sidle quickly discover that the two casino shootout victims were no innocent bystanders: one was the powerful leader of the Predator gang, and the other a luckless card dealer who may have borne witness to an elaborately staged execution. Meanwhile, back in the glitter of Sin City, CSIs Warrick Brown and Greg Sanders have their own hands full, as the dark side of this desert metropolis is about to wreak havoc on the two investigators via a seemingly endless series of crimes. . . .

What happens when a reality TV series gets a true dose of reality? A staged prank for a hit scare show has gone horribly wrong with an actor now dead and production halted indefinitely. As the graveyard shift of Sin City’s best crime scene investigators—including Catherine Willows, Ray Langston, Nick Stokes, Sara Sidle, and Greg Sanders— digs deeper behind the scenes, more questions than answers pile up: Was the botched prank’s set-up simply a case of carelessness on the producers’ part resulting in a tragic accident, or did someone really orchestrate an elaborate scheme for revenge and murder?

A ruthless and expertly trained contract killer is on assignment in Nevada's remote Desert National Wildlife Range...and he deliberately sets in motion a series of seemingly unconnected events that will soon test the skills of Gil Grissom and his team of CSIs -- Catherine Willows, Nick Stokes, Warrick Brown, Sara Sidle, and Greg Sanders -- to their limit. For all is not as it appears in this federal refuge, as law enforcement and lawbreakers alike are quickly caught up in a growing crime scene that leads to a deadly game of one-upmanship....