Horatio winds up with a bounty placed on his head when he targets one of Miami's most dangerous gangs.
The CSI team uncover a web of lies within a wealthy family whose daughter has died in shark-infested waters after being trapped on a burning yacht.
The CSI's experience the seamy side of Miami nightlife when they must find out what happened to a teenager who has gone missing after a wild night of partying.
Even though Det. Tripp secured a confession from a suspected murderer, Horatio is convinced that the evidence points instead to the man's innocence and the CSI's race to find the truth.
Calleigh, Delko and Ryan each come to a different conclusion as to which of three housewives on a girls' weekend in Miami murdered a hotel pool boy.
All the evidence points to Horatio when a woman he has been seeing winds up being murdered, leaving the job of proving his innocence up to his colleagues.
Det. Mac Taylor from CSI:NY arrives in Miami to help track down an escaped serial killer that he had helped convict.
Ryan is badly injured when the team investigates a murder that seems connected to a bitter divorce case.
The team must root out a group of criminals that are playing out the action from a violent videogame in real life.
Horatio and the team investigate the murder of a suspected drug lord while one CSI is arrested for purchasing drugs.
New technology assists in identifying a rapist in a cold case, but the man in question is found dead before he can make it to trial.
The CSIs investigate the brutal murder of a man who was trying to learn how to pick up women at a Miami nightclub.
The team once again go after the Mala Noche gang after a female executive is shot at an afternoon concert.
The CSIs discover eerie similarities between a series of murders and an unpublished screenplay written by two college students.
A body found on the beach appears to be the work of Horatio's nemesis, Walter Resden.
Alexx may be responsible when a convicted child molester is found murdered in her neighborhood.
Horatio asks Natalia to dredge up a secret from her past in order to solve a case.
After a man is found innocent in the murder of his wife, the CSIs discover evidence that may prove he is actually guilty.
When a group of women are robbed at a day spa the CSI team discovers that the victims are being targeted for future home robberies. Horatio gets personally involved when he finds that friend, Marisol, is one of the victims.
A young couple is released from prison who’s now become media darlings because of their illegal activities. Unfortunately their past catches up to them when their lives are threatened and the CSI team has to figure out who's trying to kill them.
The CSI team must find a woman who has been kidnapped and misdials a cell a cell-phone number begging for her life, the team must find her before its too late. Marisol has to make a decision affecting her future, Horatio helps with her dilemma.
A murdered man aboard a cruise ship leads to a long list of suspects including the victim's wife, who he had just met several days prior, her daughter, a magician and the captain. When it's discovered that a large sum of money was taken from the victim's safe the team narrows the list of suspects.
Horatio announces to Delko that he and Marisol plan to get married as soon as possible but their big day is on course to be spoiled by murder. A spoiled heiress is found dead in her bathtub, her boyfriend, red carpet rival and personal assistant are the main suspects. The victim is found dead at a star-studded party and the CSI's have their work cut out for them when they discover all of the suspects have a motive.
Just as Horatio and Marisol begin their new life together as husband and wife, the Mal Noche gang trial is disrupted when a witness helps the defendant escape during his own testimony. Now free and running from the law, the criminal orders Horatio's death -- but ends up shooting Marisol instead. Meanwhile, a jilted lover from Delko's past terrorizes any woman close to him.
Horatio and Delko search Miami to bring down the Mal Noche gang once and for all after the murder of Marisol. However, their quest is jeopardized when the Feds seize the CSI lab with the intent to close it for good, based on the tip from the mole inside. When the mole is finally revealed to the entire lab, the news sends the remaining CSIs reeling.