CSI: Trilogy

The CSI: Trilogy linked all three CSI shows for the very first time in a three part story. The seventh episodes of the 2009-2010 season had continuing stories with Laurence Fishburne as Dr. Raymond Langston in all three. The episodes were the CSI: Miami episode "Bone Voyage" broadcast on November 9, the CSI: NY episode "Hammer Down" broadcast on November 11 and the CSI: Crime Scene Investigation episode "The Lost Girls" broadcast on November 12.

CSI: Miami - Bone Voyage (Part 1)
In Miami, Lt. Horatio Caine is called to find a woman's missing daughter, Ashley Tanner. Her car is found in the Florida Everglades where the team searches the trees and swamps until they find a severed arm and leg. They identify the arm as that of Ashley's, but the leg is from an unidentified Jane Doe and is covered by radioactive sand, which is only found in Las Vegas. Soon, they get a lead when they discover that Ashley's credit card had recently been used, and their trail leads them to another girl, Madeline Briggs, who says she found the card on the side of a highway and seems to be at a dead end. In the meantime, Horatio calls Dr. Ray Langston, who deduces that the severed leg belongs to his own missing girl, Samantha Matthews. Ray flies to Miami, where he and Horatio team up to find out who's responsible for killing these girls. To their shock, they discover that both women were seduced by the promise of making a living through modeling and were exposed to prostitution. What's unexpected is the fact that the girls were killed by two different men - a professional "rock star" butcher and a model manager-turned-pimp who was associated with Ashley. As it turns out, a mysterious crime syndicate working outside Miami called the "Zetas" had been funding these men, which leads Ray and Horatio to believe that this case is much bigger than they ever imagined.

CSI: NY - Hammer Down (Part 2)
An accident on the interstate involving a drunk driver and a rig truck takes a turn for the worse when Detective Donald Flack, Jr. finds a metal drum in the cargo area of the truck with a dead woman's body inside. Mac Taylor finds a mobile dungeon in the sleeper compartment of the truck and discovers that another woman, Madeline Briggs (the woman missing from Miami), was in the sleeper when the accident occurred. Now both the truck driver, Casey, and Madeline have disappeared after the accident when Casey hijacks a driver. When Dr. Sid Hammerback examines the female victim in the metal drum, he notices an organ is missing. The team theorizes that the victim was kidnapped and dissected for her liver, which was sold on the black market. Dr. Ray Langston of the Las Vegas crime lab, having recently helped Horatio Caine arrest two killers in Miami, arrives in New York to help Mac and his team find Madeline and stop the Zetas' human trafficking network. When urine found in the sleeper of the rig is examined, it's discovered that Madeline is pregnant; Mac and Ray determine she's a forced surrogate and Casey might sell her into prostitution until she gives birth. The team gets a lead and tracks the suspect to a pharmacy, where they lose him in a chase but find soil samples in his car. A match is found with the soil samples found earlier, and Mac, Ray and the team head to the location. They don't find Madeline, but they do find Casey, and a gunfight ensues, ending with Casey's arrest. Casey gives Mac and Ray no information, but what he does tell them is that he gave Madeline to another trafficker, and she's revealed to be in the sleeper compartment of another rig truck heading to Las Vegas.

CSI: Crime Scene Investigation - The Lost Girls (Part 3)
Dr. Ray Langston is back in Las Vegas and still searching for Madeline Briggs after trying to find her in Miami and New York. At the same time, a local weather girl, Deedee, is found dead outside the Tangiers Hotel & Casino, dressed as a hooker. When the team examines her, they discover Madeline's blood on Deedee's earring and an equally important tattoo. They theorize that Deedee and Madeline may have lived in the same place and shared the same pimp, so they go to a nightclub and spot another hooker, Diane, with the same tattoo as Deedee. They arrest her on a bogus charge but get a lead when she calls her pimp from the station. The team follows her to a house where they see one of the pimps, Anthony Samuels, wearing the other earring seen on Madeline. Searching the house, Ray finds a bloody mattress and a lock box filled with money, casino chips and driver's licenses, including Deedee's. In the house, the team finds Diane, beaten to a pulp, when they examine her they find another tattoo covered over by Anthony. This leads the team to believe she used to belong to another pimp - Dmitri Sadesky, a Russian professor at WLVU. Ray studies the mattress and finds definite matches to the blood of both Madeline and her unborn child. In the meantime, Catherine Willows goes through the security footage from the Tangiers to try and figure out what really happened to Deedee and discovers Diane to be the murderer because she was jealous of Deedee being liked by Anthony more than her. Dmitri is caught with evidence in his car from the leg Ray and Horatio Caine found in Miami and more dead women's bodies are found in the desert. With no other choice, Dmitri helps the team take down the human trafficking ring and admits he did have Madeline, but let her go because she was useless to him. Ray finds a way to send Madeline a text message saying her mother loves her in spite of everything that's happened. The message reaches Madeline and she meets Ray outside the crime lab.

Trivia

 * Trivia: The Crossover was originally written for both Laurence Fishburne and Lauren Lee Smith, however when Lauren left in the late ninth season of CSI, the decision was made to send Fishburne's character to the other cities alone, rather than with somebody else.
 * Goof: While at the scene of the truck accident, Flack mentions the truck is from a leasing firm out of Charlottesville, North Carolina. There is no Charlottesville, North Carolina. There's a Charlotte, NC, and a Charlottesville, Virginia.
 * Trivia: The scene where Mac and Ray first meet was shot at Battery Park World War II Memorial in lower Manhattan, NYC.
 * Trivia: The episode title of part 2 "Hammer Down" is trucker slang for fast speed driving.
 * Goof: In episode 1 The bear shown charging the CSIs was a grizzly bear, which is not found in the wild in Florida. It should have been an American black bear
 * Goof: When Catherine is looking in the Vice Tattoo Database for a match to Dede Chase's tattoo, she finds it and pulls up a window with a list of known prostitutes that have the same tattoo plus the other tattoos they have. On that list, "Barbed Wire Tattoo" has the word "Tattoo" misspelled "Tatoo", missing a "t".
 * Trivia: In Part 3 it is revealed that Jim Brass's uncle and older brother are both cops.
 * Trivia: Miley Cyrus was offered the role of Madeline Briggs, but turned it down.

Episode Titles

 * *Aired as a single 2 and a half hour Special

DVD Release
{| class="wikitable sortable" border="1" ! DVD Title !! Release Date !! Bonus Features
 * align="center"|CSI: The Trilogy || align="center"|TBC || align="center"|On Set with New York On Set with Miami On Set with Las Vegas Interview with Laurence Fishburne Behind The Crossover: Interview with the Executive Producers Customised Title Sequence for the Crossovers Interview with David Caruso Interview with Gary Sinise & Melina Kanakaredes CSI: Langston Featurette
 * align="center"|CSI: The Trilogy || align="center"|TBC || align="center"|On Set with New York On Set with Miami On Set with Las Vegas Interview with Laurence Fishburne Behind The Crossover: Interview with the Executive Producers Customised Title Sequence for the Crossovers Interview with David Caruso Interview with Gary Sinise & Melina Kanakaredes CSI: Langston Featurette