Las Vegas is flooded with college girl disappearances and bloody murders, as soon turns out using the MO of Seattle serial killer Jared Briscoe, arrested by Russels and Finlay when cops there, whose last appeal on death row recently was refused. It seems a copycat, with macabre extensions to his method, consisting in pre-staging CSI forensic research, using victim parts. Daniel Shaw, also ex-Seattle PD, now PI, offers to team up as his present partner Emily Barston is missing while they looked for a missing Vegas student girl, but is turned out she was killed herself while working on a trail pointing at Briscoe's twin, adopted by better parents and now an untouchable businessman. Russel stars doubting if Jared was the mastermind. Written by KGF Vissers

legal marijuana seller Lloyd Bryant's wife and daughter are kidnapped, the only eyewitness is murdered. While DB and Julie worry mainly about the presume serial killer brothers, Nick and Greg take charge. They find secrets and potential motives, drug-related or other, for at least one crime with every family member as well as suppliers and clientèle. Written by KGF Vissers

CDC may be dealing with a potential deadly virus outbreak in Las Vegas, and Sara and Greg may have been exposed to the virus while investigating a crime scene.

Popular high school chemistry teacher Chet Messner dies apparently from an inflammatory experiment, in fact poisoned by a paper he had to grade. Chet Messner, janitor Ed Lusk, another teacher and the principal were all members of a Wicca coven, were trouble was brewing, including spells. Model nerd Mason Brewer recently sent him an 'or else' mail after a mediocre grading. He also produced a drug to deal among athletes, including quarterback Rob 'Turk' Turkla, he drowns shortly after due to a knock on the head. Written by KGF Vissers

Greg painstakingly identifies a nearly-acid-consumed corpse as a luxury hotel security agent, whose access badge was stolen by someone who had been hiding in his car. It's used by Jeff Lasky, the apparently mad, yet well-prepared shooter who makes suspiciously few victims with his machine-gun at a forensic conference attended by the CSI girls and prefers being fatally shot rather then surrender to the SWAT team. Finlay's first significant date in years, software salesman Mark Perlow, gets wounded and must hide with her in the elevator, but D.B. soon realizes he can't be shot by Lasky and starts looking for the second shooter, who has an independent, yet similar motive. Written by KGF Vissers

Frustration mounts for the CSI team as another victim surfaces who is linked to the Gig Harbor killer.

A woman in rehab at a posh Las Vegas facility is killed, and everybody at the facility is under suspicion.

A dumped female corpse is found in an alley, wearing a faceless, custom-made leather doll suit. D.B.'s team must investigate the fetish scene where people party wearing such anonymous costume. They find the victim was a relative newcomer, but so popular as to upset the social rapports traumatically. Furthermore, loved-ones hide further frustrations. Written by KGF Vissers

After his syringe-phobic LV pre-trial jail cell-mate goes berserk during a mandatory flu injection, inmate Bruce Grady is found fatally stint-stabbed in the laundry. He was a regular police informer on prisoners, but recently also an FBI informer on prison staff. Bright detective Carl Brenner, LVPD's youngest ever, is eager to prove himself. Written by KGF Vissers

A man left buried alive managed to crawl out at night, only to be fatally ran over by a birdbrain driver, is identified as ex-con mobster and master pool hustler Jimmy Turelli. The pool hall he left managed during his prison term by Natalie 'The Hornet' Barrow, who effectively turned it into an illegal bordello, was cleaned out by pool champion Calvin Tate, who is later found murdered himself. Written by KGF Vissers

Air Force test pilot captain Robert Holland made a fatal fall in a prototype wing-suit. However his corpse was moved to the desert and he was dying from a brain condition anyway. The team soon realizes being lied to by the widow, who knew of his infidelity, his military project manager USAF major Bernard Mills and two-faced wing-suit company executive Claudia Mason, who encouraged after-hours (ab)use of the prototype. Holland's colleague Jack Ferris suffers a gruesome death during his revealing interrogation, which lead to more secrets to be tied in. Written by KGF Vissers

Sara reopens a 10-year-old family murder/suicide case when the lone surviving daughter claims to have a new memory about that fateful evening that proves that the father didn't do it.

D.B. makes the risky decision to use his daughter as bait to catch the Gig Harbor Killer, and discovers the shocking identity of the killer's partner.

The investigation of a dead body found in a car that once belonged to a serial killer takes the detectives into the twisted business of murderabilia.

The CSI team investigates the murder of a young victim dressed as a superhero.

A murder victim is covered from head to toe in silver chrome paint, and the clues lead the team to a classic convertible where a former Las Vegas legend was murdered.

While investigating the murder of a man, they discover that the victim was with the daughter of the head of the crime lab in San Diego, who offered Nick a job. They learn the man is in Las Vegas. He tells them that she was with her sister who lives in Las Vegas with his ex-wife. Later a video is posted that shows the girls were abducted. Nick does his best to find them. Written by rcs0411@yahoo.com

A final showdown between the CSIs and the Gig Harbor Killer, whose motives are revealed. Meanwhile, Nick Stokes makes a decision that affects the team moving forward.