The Best Episodes Written By Sunil Nayar

As the Graysons gain the upper hand, Emily must take on a new identity to expose them.

The CSIs must race against time when all evidence in a murder case points to Horatio. When a murdered woman is discovered, Horatio admits that he was seeing her and that he was the last person to see her alive. Although the evidence logically points to Horatio as the killer, our CSIs must now dig deeper to find the real killer and learn who would have the motive and the method to frame him.

Schillinger has a disappointing visit with his "hero", Mayor Loewen. Glynn has to face up to the truth when Oz loses its first prisoner to toxic poisoning. Down in solitary, Officer Brass gets some quality one-on-one time with Morales. Cyril undergoes a round of unusual therapy, and Said gets more than he bargained for in leading the Muslims into a new business venture.

When gang-related gunplay goes down in an emergency room, Horatio and the team must find the gang members responsible. The evidence suggests that an orderly in the hospital recognized the wounded gang member, who possibly killed one of the orderly's friends and alerted gang members to his location. However, the evidence doesn't match up and the CSIs discover that a cheating girlfriend, not gang retaliation, may be behind the shooting. Meanwhile, Ryan questions a mother in the emergency room after her story regarding her child doesn't add up.

The episode picks up straight where "One of Our Own" left off. Horatio and Delko have arrived in Rio de Janeiro to hunt down Antonio Riaz, who ordered the hit on Marisol. The problem is that Horatio can't stop thinking about his late wife, and Brazilian authorities aren't being very cooperative. While there, Horatio runs into Yelina and finds out that Raymond is missing again. Ray Jr., now fourteen, teams up with Brazilian authorities and will stop at nothing to bring his father home safe, until Horatio learns the terrible truth... Raymond is already dead. Now Horatio must stop his nephew from getting himself killed trying to chase a ghost.

When strange accidents occur in the lab, the CSI team is spooked during a death investigation involving voodoo. As Halloween is near everyone starts to think that the lab is cursed.

After a wealthy businessman is killed at a charity event the CSI's first suspect his wife who was hosting the event. The blood evidence is thought to belong to the wife or her two secret twin sisters but leads the investigators in another direction after the victim is not who they thought he was.

Megan and the team investigate when a Philadelphia homicide detective is killed in a hit-and-run; Megan turns to her mother (Joanna Cassidy) for help.

When a popular 17-year-old high school student is found dead after a rave, the team must decipher various unknown drugs in his system and multiple bruises to figure out the cause of death. Meanwhile, Meghan is finally starting to date again after the divorce, but her ex-husband springs some shocking news on her and her daughter, causing tension at home.

When a woman suspected of murdering her son is found innocent, Megan and the team try to identify the real killer; an overzealous reporter makes the investigation difficult by sensationalizing the case.

Mark and Emily go head to head in court for the first time, and things get awkward when Mark must cross-examine Lola’s mother when she’s called as a character witness.

A former high school football star is murdered at a reunion, the CSIs must find the killer. The victim was the big man on campus in high school and there are a lot of guests at the reunion with reasons to resent him all these years. Now, the team must investigate everyone, from the head cheerleader to the school misfit, to see who held a decade-old grudge big enough to kill. Meanwhile, Horatio and Delko arrive at a crime scene and discover that it's already been processed, leading Horatio to uncover further information about his brother possibly being alive.

There's a serial killer on the loose marking all of his victims with a Y on their chests and one or more of the csi's lives are in danger in this season 5 finale

Horatio's son goes missing when a prison transport is attacked. Upon learning the identity of Kyle, he is targeted in order to get at Lt. Caine, who must find him before it is too late. Meanwhile, Ryan causes tension with his former colleagues when he is hired as an expert witness for the defense.

Kyle's mom shows up in Miami and she is the widowed wife of a billionaire. She wants Kyle back and will do anything to get him back.

Faces from the past are reemerging all around the Hamptons, and for Victoria and Emily it brings on different kinds of trouble and significance. Meanwhile Jack’s sense of duty grows exponentially, and Padma makes a move that could have major ramifications for Nolcorp.

McManus finds he is unable to turn his back on White. Beecher tells the parents of the young girl he killed that he's up for parole. Howell tries to blackmail O'Reily so she can get to Cyril, but he throws her for a loop--and then O'Reily is thrown himself by a family secret.

Idzik faces his enemies; the intrigues behind the Loewen case get more complicated; changes are made in the hospital; the Muslims run into business trouble; Rebadow and Stella get closer; and the inmates rally to support the O'Reilys.

Sister Pete's anger is roused and forces her to confession. Wangler and Adebisi register a complaint to the Warden. Yet another inmate meets with demise. Bellinger enlists McManus' help. Glynn and Hughes have an important conversation. Adebisi begins sowing seeds of discontent and a fight erupts in the gym resulting in a lockdown.

McManus calls a superficial truce between Redding and Morales. Basil finally sees his wife, but Hughes ends up spoiling their happiness. Meanwhile, Cyril's latest outburst proves to be the last straw.

Josh Dalton, a hot, young reporter for the Miami Sun, witnesses the murder of his friend, a city councilman's aide, in Miami's drug district, the Golden Triangle. Josh, who was suspiciously unharmed in the attack, claims that they were only down there on a story, but Horatio believes that there's more to the situation. Later, another writer from the same paper is found shot to death inside the trunk of her car, which was reported stolen. Now, as the evidence rejects Josh's version of what happened, the CSIs find themselves entangled in the world of fast-paced journalism and learn that there is a dangerously fine line between the truth and what sells newspapers.

An adult film actress is found strangled in the park and the CSIs must find the killer. Blood and human tissue are found under Ashley Anders' nails and the DNA matches that of the CEO of the company that distributes her films – and he's a registered sex offender. Also, Calleigh discovers his answering machine audiotape on which he makes a threat against Ashley. However, there is an accident back at the lab with this crucial piece of evidence and Delko was the last person to handle it. Now, IAB's Rick Stetler is put on the case, much to Horatio's dismay, as the CSIs try to uncover further evidence in order to find the girl's killer.

The unexpected arrival of Mayor Wilson Loewen at Oz spurs an ironic turn involving Schillinger and Beecher. Meanwhile, Dr. Nathan discovers why solitary inmates are getting sick; a new business plan within Oz inspires Redding; Schibetta looks to puts a curse on the O'Reily family; and some Death Row prisoners get a bang out of a magazine photo shoot.

Horatio delves into Delko's past to find the killer who targets the motel Delko is staying at.

With Emily by his side, Daniel goes toe to toe with his fiercest business rival, Jason Prosser, to land an important deal that Victoria is determined to block. Aiden takes a very dark turn, and Jack and Amanda’s future lands in the unlikely hands of Conrad Grayson.