episode 4.13 suckers
a young woman is found drained of blood, and the evidence, including the fangs she's wearing, point the csis to modern-day vegas style vampires. meanwhile, an invaluable 17th century samurai collection disappears in a casino heist or does it?

episode 4.14 paper or plastic
officer fromansky, grissom's nemesis, is involved in a grovery store shootout where five people die, including his partner, and when his version of what went down doesn't jibe with the evidence, grissom is determined to find out what really happened.

episode 4.15 early rollout
the csis investigate the murder of a couple, a club owner and his trophy wife, shot execution-style in their driveway, whilst catherine reveals the damaging secret she's been keeping about sam braun.

episode 4.16 getting off
a man is found dead inside a tyre in the part of vegas known as tranny town, but he's not a transvestite, he's a professional clown. meanwhile, another man is found stabbed to death in the crack and syringe area, but he's not a customer, he was a counsellor at a halfway house.

episode 4.17 xx
a prison bus is involved in an accident, and when the csis investigate, they discover a female inmate tied to the undercarriage, but she wasn't escaping, she was murdered. in the meantime, grissom and warrick are called to the scene of a brutal stabbing.

episode 4.18 bad to the bone
a suspect in a brutal murder violently attacks grissom during interrogation, and when brass and officers struggle to subdue him, he winds up dead, and although the police are cleared of wrong-doing, grissom has more questions than answers about the man's inexplicable past.

episode 4.19 bad words
the csis show up at the scene of a house fire, with reason to believe that there may be a serial arsonist at work in the neighbourhood, but when a young girl is discovered dead in the house, the investigation turns from arson to murder, a champion logos player is asphyxiated by game tiles.

episode 4.20 dead ringer
a runner in the annual law enforcement desert relay is found dead at the side of the road, and every suspect in the csis' investigation of his death is a cop. meanwhile, in another part of town, sara and warrick are called in what looks like an extramarital affair-turned-murder/suicide.

episode 4.21 turn of the screws
six people are dead after a roller coaster car flies off its tracks at an amusement park and careens into a parking lot, but the csis discovers one of the victims was not on the ride and was murdered before the accident actually happened. catherine and warrick investigate the death of a young girl whose boys was dumped at lake mead.

episode 4.22 no more bets
two college kids who were scamming sam braun's casino wind up dead, and grissom removes catherine from the case because of her personal involvement. meanwhile, grimssom recommends nick for a promotion, and sara is crushed.

episode 4.23 bloodlines
a casino worker is beaten and raped after she leaves work, and the csi investigation leads to what looks like a slam-dunk arrest in the case - until the evidence lies.

pre-production disc 5 (part 2)
production disc 6 (part 2)
post production disc 6 (part 2)

commentary from bad to the bone