The CSIs follow a trail left by Shane Casey and realize that he is targeting Danny, who is vacationing out of town with Lindsay and their daughter
While Mac recuperates at home after being injured, he witnesses a mysterious briefcase exchange that leads to a murder, and unexpectedly brings him in contact with his former girlfriend, Peyton Driscoll.
Mac is determined to seek justice when a 14-year-old boy is shot in front of his 12-year-old brother.
When a slab of concrete starts bleeding in midtown, the CSIs’ investigation takes them into the underground world of hardcore fighting, where men moonlight as “weekend warriors” for the pleasure of a live viewing audience.
A death row inmate’s final request brings Dr. Hawkes to a Pennsylvania prison and face-to-face with a tragic incident that he has kept secret for many years, just as a prison riot erupts and traps Hawkes inside
Stella has a hard time convincing the team when a murder that looks like a suicide is being investigated, so Stella does her own investigation into the case.
When a double homicide involving two young journalists who are investigating a story about gold fraud occurs on the eve of St. Patrick’s Day, the CSIs must find the clue at the end of the rainbow.
The team investigates the particularly gruesome outcome of a 21st birthday where the party plans became all but anything worth celebrating. With just a few and not easy answers as their only lead in the case, the CSis are challenged to stretch their abilities to the limit.
Two days before a Grand Prix Race, when a racing legend dies in a car explosion on the streets of Manhattan, the CSIs discover that car tampering is the cause; however, the investigation leads viewers through the professional racing community and beyond.
A body is discovered in Central Park, drained of blood and missing part of an ear. The CSI’s investigation takes them deep in to the underground vampirism subculture.