Mac and his team discover the home of the so-called Compass Killer (Skeet Ulrich) and attempt to save the madman's fourth victim.
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The Compass Killer (Skeet Ulrich) claims his third victim when a body plummets from the 59th Street Bridge. A compass pointing east is discovered near the body. Terrence Davis: Nelly.
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Ray Langston of the Las Vegas crime lab tracks a human-trafficking ring that specializes in black-market organ harvesting to New York, where he assists Mac in attempting to free a hostage taken by the criminal group. The story began on "CSI: Miami" and concludes on "CSI: Crime Scene Investigation."
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A software-company executive bleeds to death on the street. Hawkes believes he may be responsible because he attended to the victim just hours before in the park as part of a volunteer medical service and didn't think his condition was serious. The investigation takes the CSIs into the underground world of "food sploshing" parties, in which participants use food in sensual ways. And Hawkes reveals a surprising fact about his life.
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A rising star in the underground world of street-dancing competitions is murdered in his hotel room shortly after winning a contest and his girlfriend is beaten. The investigation rules out robbery as a motive since the victim's prize money wasn't taken. The chief suspect is a rival dancer who placed second in the competition.
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A woman confesses to murdering her cheating husband by stabbing him 17 times, but DNA evidence found at the scene suggests she isn't the killer and that another woman may be responsible. The investigation also reveals the mystery lady may be involved in a series of other crimes. Meanwhile, Don freezes during an arrest at gunpoint and his behavior is called into question.
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A night-shift janitor is found hung on Ellis Island and the apparent suicide is quickly ruled a homicide. The killer (Skeet Ulrich) left behind an antique compass as a clue. Later, another compass mailed to Mac points to another murder victim on the opposite end of the city. And Mac hires Haylen to work in the lab, much to Adam's dismay.
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A killer who is bitter toward the health-care industry murders high-profile workers in the field. The case turns personal for Mac when the suspect calls and taunts him by mentioning the name of Mac's father, who died nearly 20 years earlier.
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Epilogue
Season 6, Episode 1
The sixth season begins with Mac's team recovering from a hail of machine-gun fire aimed at them a month earlier while they were at a local bar. Danny, now in a wheelchair, meets with a woman who claims to have information about the crime, but she's gunned down during their encounter.
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