A violent shooting leaves Mac in a limbo between life and death and with a choice to make. While he struggles for his life, it's up to his team to bring the shooter to justice.
Mac and his team try to get to the bottom of the murder of a successful businessman who still felt the pull of his old neighbourhood by going to a Brooklyn housing project and speaking to the victim's old friends and neighbours.
A wave of brutality threatens a small New York City community. As Flack investigates a crime after a body is found dismembered and strategically left out on four street corners he is surprised by an explosion.
Mac's team has to figure out if a high stakes tournament lead to murder and hence the CSIs find themselves immersed in the world of competitive video gaming.
The CSIs discover secrets about the lab after seeing connections to a case in the 1950's that may help them figure out why a lab tech was killed.
A bike courier, minus his bike, tumbles to his death down the 187th Street Steps and a man out for a jog is found impaled by a hunting arrow against a tree. There is no apparent connection between the two except for an unusual type of chewing gum. Meanwhile Mac and Jo try to get to the bottom of Sid's mysterious absences.moreless
A fun game gets all too real when one of the players gets murdered by a killer and another player is held for ransom.
The team has to figure out what secret a wealthy family is hiding after they are a victim of a home invasion.
The team has to figure out what would lead a stalker to viciously murder a cage fighter.
A witness's death causes Jo to wonder why a rapist was free during her time working at the FBI and, at present, she hopes to be able to put the past behind her.
The team looks into the reason for the assassination of a judge while Jo tries to come to peace with why she left the FBI.
A video of a high school party causes the team to wonder if too much weight on a porch caused the death of a girl. Jo has to deal with her former partner bringing memories of her last F.B.I. case.
The team has to figure out if a fraternity prank gone bad led to someone being left for dead in an open grave.
Despite having been stabbed to death in a gruesome way, a young woman seems to have found a last moment of strength to leave a clue pointing to her assassin. The team must determine how much truth there is in the victim's last act.
A night out for some drinks among friends will turn out all but a friendly outing when Danny and his rookie cops find themselves caught up in a shooting.
Danny and his team are puzzled as to why young women's bodies are being found in Ferraris and wonder if it'll escalate into something much bigger.
The team investigates if the efforts of a young man to get close to a rock star brought about his death.
On the 10th anniversary of 9/11, we bear witness to some specific events from that day as Mac and the team recall some moments that have been indelibly burned in their mind ever since.