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  1. Viva Las Vegas Episode 1 Viva Las Vegas September 23, 2004, 46 min A wild night in Las Vegas has the CSIs simultaneously investigating four fatalities. Greg Sanders' first day in the field has him assisting Grissom's investigation of a fatal nightclub shooting.…
  2. Down the Drain Episode 2 Down the Drain October 7, 2004, 45 min Heavy rains in Vegas wash up a body in the storm drains. As the team investigates, they find bones from another murder.
  3. Harvest Episode 3 Harvest October 14, 2004, 45 min A child is abducted. As the Amber Alert goes out, the entire team investigates in a race against time. Lindsay Willows is found hitchiking to the alarm of Catherine.
  4. Crow’s Feet Episode 4 Crow’s Feet October 21, 2004, 45 min A woman is found dead in a hotel suite with symptoms of the ebola virus. Another woman is found dead with similar symptoms. Catherine and Nick investigate. Sara and Greg…
  5. Swap Meet Episode 5 Swap Meet October 28, 2004, 45 min Grissom and Sara investigate the murder of a woman after a swap party. The married couples in the neighborhood meet and switch partners. With the help of a crime scene…
  6. What’s Eating Gilbert Grissom? Episode 6 What’s Eating Gilbert Grissom? November 4, 2004, 45 min The killer from The Execution of Catherine Willows returns with deadly results. The entire team is engaged in a race against time to stop this sadistic killer from succeeding again.…
  7. Formalities Episode 7 Formalities November 11, 2004, 44 min Grissom is called to a murder of a 17-year-old in a casino penthouse. Sophia Curtis (Louise Lombard) joins him in his research, she normally works in the day-shift. The entire…
  8. Ch-Ch-Changes Episode 8 Ch-Ch-Changes November 18, 2004, 45 min A woman who was pulled over by police is found murdered two miles up the road from the stop. It's not long before Robbins determines that the woman is, genetically…
  9. Mea Culpa Episode 9 Mea Culpa November 25, 2004, 44 min Grissom is confronted with new evidence while on the stand of a murder trial of a restaurant owner. This development requires the reopening of the case and Eckley initiates an…
  10. No Humans Involved Episode 10 No Humans Involved December 9, 2004, 44 min Grissom and his team investigate the starving death of a five year old boy. They discover the boy has siblings who are in danger too. Catherine and her team determine…
  11. Who Shot Sherlock? Episode 11 Who Shot Sherlock? January 6, 2005, 45 min Greg, for his final proficiency, has to determine how the Sherlock Holmes of a Sherlock Holmes club was killed. Nick and Warrick try to determine how the driver of jeep…
  12. Snakes Episode 12 Snakes January 13, 2005, 44 min The swing shift has a busy time. Warrick looks into the murder of man by someone who apparently needs a wheelchair. Nick looks into the murder of woman in the…
  13. Nesting Dolls Episode 13 Nesting Dolls February 3, 2005, 43 min Catherine, Warrick and Nick find the body of two women at a construction site buried under tar. The swing shift are brought into the world of foreign "mail-order" brides. Sara…
  14. Unbearable Episode 14 Unbearable February 10, 2005, 45 min Grissom, Sofia, Sara and Greg investigate the disappearance of a woman coming home from a night out with a friend, her abandoned car found on the edge of a highway.…
  15. King Baby Episode 15 King Baby February 17, 2005, 45 min When a major Las Vegas player is found dead, Ecklie orders both teams to investigate the case. The man who had secrets on everyone in Vegas had a very big…
  16. Big Middle Episode 16 Big Middle February 24, 2005, 43 min Catherine, Nick, and Warrick investigate a badly mutilated body in the woods. The cause of death was a shotgun blast. Nearby is a beaver dam made in part with cash.…
  17. Compulsion Episode 17 Compulsion March 10, 2005, 44 min A serial killer strikes again, and the CSI team tries new technology using evidence from a prior killing. They find a fingerprint belonging to Jesse Acheson, who becomes the prime…
  18. Spark of Life Episode 18 Spark of Life March 31, 2005, 43 min Grissom, Sara, and Nick investigate a wildfire that killed one man and badly burned a woman. Catherine, Nick, and Warrick get the case of a family of three murdered in…
  19. 4 x 4 Episode 19 4 x 4 April 14, 2005, 45 min One night, four cases. Grissom and Brass get a stolen hummer and a taco stand. Warrick gets a dead car show girl. Sara and Greg get a dead bodybuilder. Nick…
  20. Hollywood Brass Episode 20 Hollywood Brass April 21, 2005, 45 min Brass travels to Hollywood, California to try to track down his estranged daughter's friend, meanwhile trying to rekindle some kind of relationship with her.
  21. Committed Episode 21 Committed April 28, 2005, 42 min Grissom and Sara investigate the murder of a mental-hospital patient and quickly narrow down the suspects to a handful of other patients and staff members.
  22. Weeping Willows Episode 22 Weeping Willows May 5, 2005, 44 min A man (Alan Rosenberg) whom Catherine flirted with at a bar reappears in her life as a suspect in a murder investigation.
  23. Iced Episode 23 Iced May 12, 2005, 44 min Two amorous freshmen are found dead on a sleeping bag in a dorm room, and Sara and Greg run into one dead end after another as they try to determine…
  24. Grave Danger (1) Episode 24 Grave Danger (1) May 19, 2005, 46 min The CSI teams come together to save one of their own when they learn one team member has been kidnapped and buried alive, and now they must find him before…
  25. Grave Danger (2) Episode 25 Grave Danger (2) May 19, 2005, 41 min The CSI teams come together to save one of their own when they learn one team member has been kidnapped and buried alive, and now they must find him before…