Delko and Caine follow Riaz down to Brazil, where an unexpected family connection appears. Meanwhile, Calleigh is in charge while Caine is away, and Natalia is having a rough day.
A biker who falls off a balcony was an undercover A.T.F. agent. The gang he infiltrated may be running "corner-shot" guns designed for urban warfare, and another agent who also infiltrated the group may hold the key to the case.
Investigating a male corpse found in the marina involves male models and their modeling agency, while Natalia's abusive ex-husband begins stalking her.
When a City Councilman is found stabbed to death, Horatio and the team find themselves tied into an eminent domain case and Ryan bonds with a teenager on the scene.
The investigation into a beheading during a stunt at an automobile "sideshow" could ultimately expose a larger cover-up involving stolen cars and jet fuel.
CSI steps up the search for potential serial killer who may be connected to a professional photographer after it discovers that Natalia's sister may be the next victim.
After the murder of a bachelorette contestant in an auction, CSI discovers that the victim was working undercover for the government. And the event organizer may have connections to a terrorist cell.
The death of a Marine recruiter ultimately leads Horatio to open an investigation into the death of a soldier in Iraq. The soldier's brother claims responsibility, but Horatio suspects a cover-up.
The defense attorney in Horatio's terror cell trial is murdered by a stray bullet, but the investigation reveals that his client was the real target. Meanwhile, Wolfe compromises the only evidence in a gang-related murder.
The death of an illegal emigrant by land mine ends up turning into three investigations that also include an assassin and death at a bar. Unfortunately it also puts several officers at risk, and Delko into an untenable position.
The robbery of a police truck containing confiscated weapons is connected to a plot to spring Clavo Cruz from prison, and one of the guns stolen in the robbery is used in the shooting of a young boy.
A real estate developer is murdered, and the investigation uncovers a complex web of deceit involving his wife her two identical triplet sisters. But the apparently-murdered developer may have had a surprise of his own.
A gaming official accused of trying to dip into Indian casino profits is found scalped to death, and the discovery of a dead prostitute's little black book suggests that he's part of a larger plot involving County Commissioner O'Shay.
An actor is found dead in the trunk of a stunt car, but the investigation reveals that he actually died in his room at a high-profile celebrity rehab facility.
While investigating a possible arson case, Horatio discovers that Yelina is back in Miami working as a private investigator. Meanwhile, Wolfe's prior relationship with one of the suspects gets him in hot water with his superiors.
