520 : Rush
521 : Just Murdered
Miami's nastiest divorce gets cut throat when the husband's girlfriend turns up dead in his portion of the house that is divided in half by lasers. What at first appears to be a case of revenge turns out to be more after the body count increases, and the husband and wife appear to be covering for each other. Making matters worst, Delko's competency is challenged by one of the divorce attorney's and key evidence becomes inadmissible.
522 : Burned
An arson home fire, leaving one man dead and nearly killing his fiancÃ©, leads the CSIs to the fiancÃ©'s ex-boyfriend, turned stalker, who is obsessed with ruining the couple's life. After discovering two burned cadavers in the home, the CSIs must determine if the fire was to start over. Also, Ryan is fired from CSI after paying off a gambling debt to a suspect in their investigation.
523 : Kill Switch
Following a carjacking, Ryan identifies the suspect during a segment on his news program, and soon after, a self proclaimed vigilante kills the suspect. But when the evidence doesn't add up, the CSIs discover the vigilante only wanted the credit and did not kill the "carjacker, and the "carjacker was not stealing a car but instead fleeing from someone shooting at him. Further investigation leads the CSIs to a cigarette boat the victim used to smuggling drugs and to a drug lord who caught the victim swindling drugs and wanted him to pay.
524 : Born To Kill
A serial killer, known for carving a "Y in his victims' flesh, strikes the streets of Miami. Evidence leads the CSIs to a suspect with the rare extra "Y chromosome; known in the 70's as the "criminal gene and believed to make a person more aggressive. But while investigating the Nature vs. Nurture element of the case and whether his parents' knowledge of the gene made him aggressive by their own expectations, the killer escapes during a prison van crash and Horatio must race to find him again for it's too late.
601 : Dangerous Son
When probation officer, Andrew Bennett, is gunned down in his home, the SWAT team is called in and gunfire is exchanged but the suspect gets away on a boat docked nearby. They eventually find the abandoned boat and the registration leads them to The Mist CafÃ©, where two of Bennett's parolee's, Kyle Harmon and Rick Bates, happen to work at. Calliegh and Delko also find a shell casing and a Ziploc bag with white residue hidden in the boat's engine. When parolee Kyle Harmon (16) is brought in for questioning, Horatio is intrigued and somewhat curious about his past. He enlists the help of Yelana Salis, who is now working as a PI to look into his background. She learns that Kyle was shuffled around in various foster homes and that his mother, Julia Eberly, abandoned him. We discover that when Horatio was undercover 16 years ago, he and Eberly had a relationship until she ran out on him. Things prove to be even more complicated when Kyle's birth certificate lists Horatio's undercover name as his father.
602 : Cyber-lebrity
When Luke Selyan, boyfriend to the famous Candace Walker, is killed at her swim meet by an arrow straight through his chest, Horatio and his team are plunged into the world of cyber-stalkers and fans will do anything to get close to Candace. They learn that someone took a photograph of this seemingly ordinary teen in her Speedo and put in on the internet causing an overnight international obsession with her. They trace the arrow back to Robert Whitten, Athletic Director and coach of the archery team, who had a wall dedicated to photos and clippings of Candace. They also find the prints of Gil Callem, a blogger and star stalker, on Luke's sunglasses. Apparently he switched out Luke's sunglasses for a bugged one with a hidden camera to capture photos of Candace. Things worsen when Candace is attacked and Ryan, whom Horatio enlists to protect her, is forced to fight him off. Scratching the attacker, Ryan is able to provide DNA evidence linking the attacker to Candace's father. Dad confesses to going after
603 : Inside Out
When a bus transporting high profile criminal, Julio Rentoria, and his two accomplices is involved in a bus accident, the inmates escape including Kyle Harmon, Horatio's son. Kyle turns himself into Horatio who then oversees his safe re-entry back into prison. In the midst of all the chaos, Tripp fires his weapon into the crowd and it accidentally hits and kills a deaf female bystander, Veronica Eckland. Calleigh tells Tripp that the bullet that killed Veronica wasn't fired from his gun but rather from a gun registered to Barry Slater. We learn that Barry shot Veronica because she was getting in the way of helping the prisoners escape in order to collect the $2 million reward money that Julio was offering up to anyone who could set him free. Natalia's credibility comes into question when Ryan shows up as an expert witness for the defense to challenge her protocol of going to the gun range to prepare for her firearm qualification instead of taking evidence back to the lab. They also track down the owner
604 : Bang, Bang, Your Debt
Horatio and his team investigates the death of college student Jessica Taylor when her body is found burned to death in a SUV and her friend Brandon Fox's unconscious body nearby. Jessica's autopsy reveals that she was killed by carbon monoxide poisoning and not by the fire. While at her dorm room they discover that Jessica fell prey to the credit card solicitors on her college campus and racked up an enormous amount of debt. Her answering machine messages indicated they were aggressively coming after her threatening to take everything she had if she didn't pay up. Brandon wakes up from his coma but yields no further clues. When they find a used condom in Jessica's dorm room and its traced back to Keith Reynolds, the credit manager at her bank, we learn that conned her, and many others, into sleeping with him in exchange for erasing her debt. Out of sheer desperation she sleeps with him but he reneges on his side of the deal. Calleigh and Delko confront Keith Reynolds while he's manning his booth on
605 : Deep Freeze
When a retired pro football player, Doug McClain, is found stabbed to death at his home, Alexx is unable to take the body back for an autopsy because he specifically wished to be frozen at a Cryonic lab. Alexx has no other choice but to follow the body to the Cryonic lab and perform a virtual autopsy. Calleigh learns that Doug was on a recorded phone call right as he was killed and they link the call back to a newspaper reporter who ironically was responsible for updating obituaries of famous people still alive. Doug's valuable sports memorabilia was also removed from the house and ultimately sold by his manager, Martin Wilson, in order to pay off all of Doug's mounting debt. With Doug dead, the value of all his memorabilia sky rocketed. Further evidence at the house leads them to a Rita Sullivan who Doug had an affair with, resulting in a son who recently died from kidney failure. Rita snuck into the house and stabbed Doug after he turned his back on his dying son. The recorded phone call also revealed t
606 : Sunblock
The team has a serial killer on their hands when a drug dealer lounging at a hotel cabana is killed during an eclipse and the ligature marks around his throat resemble that of a recent murder victim in the area. Their investigation leads them to a Mario Montero whose DNA was found at the crime scene but the results mysteriously reveal that he was taking wolf hormones that he stole from our victim. Further evidence links a missing employee ID card to a Shawn Hodges who turns out has cuts on his hands and was working at the pool at the time of the crime. The other victim, Diana Long, who was killed around midnight, was found in her apartment by a delivery guy. Diana lived her life on her computer and right before she was murdered was chatting with someone we come to learn as Nicholas Pike. Pike works in the nightclub business and was interested in meeting someone other than a model/actress and turned to the internet. Things get even more complicated when Mario is attacked the same way as our other victims but s
607 : Chain Reaction
When model, Alisha Reilly, is electrocuted to death while walking on a water filled runway at a fashion show, Horatio learns that Alisha was married to Joe Lebrock, the prisoner who threatened Horatio's son Kyle in episode 604. The designer Gavin Hauer used platinum in all his designs and we discover that in one of the dresses the platinum was removed and used to rewire the lighting on the pole on the runway. Alisha touched the pole on the wet runway which electrocuted her. Closer examination of the dresses reveal that they all contained large amounts of heroin within the fabric. Gavin was using his fashion line as a way to traffic and run his drug business. Joe doesn't give up anything when Horatio goes to question him but instead tells Horatio that it's just a matter of time before he gets Kyle. Things worsen when, Oscar, the prisoner that Horatio enlisted to watch over Kyle is killed in a cell phone detonated bomb while out on road duty. The phone is traced back to Kyle who claims that Joe secretly g
608 : Permanent Vacation
When 18 year old Brian Partney is murdered in a hotel elevator while on vacation with his parents from Canada, Horatio suspects Brian was randomly killed as a gang initiation as a black bandana was left at the crime scene. A key card on our victim leads us Mitch Pena, a guest who happened to be staying on the same floor that the elevator stopped at when Brian was shot. Mitch claims that he scared the kid when he got too close to his girlfriend but he had no reason to murder him. Shane, Brian's brother, recalls seeing a guy speed away on a motorcycle at the time of the crime. Tread marks and vegetable oil used for performance bikes lead them to a bike shop run by a Vasco Torres with known connections to the Cobra gang. Unfortunately, when the team gets to the bike yard the bike in question is on fire leaving the team with nothing. They also question Luis Mendoza, the hotel bellman who handled the Partney's luggage. Ironically, Luis lives in gang territory and his uniform jacket was found with Brian's blo
609 : Stand Your Ground
While off-duty, Calleigh is forced to act quickly when someone in a Dodge Magnum points a gun at her, and then backs up and accelerates full force at her. She shoots and kills the driver, which sends the car crashing into a sporting goods store, killing an innocent woman shopping. The passenger escaped but blood left at the scene leads them to Pete Morton, a known criminal. Meanwhile, an autopsy of our innocent victim, Valerie Gaynor, reveals that she was dead prior to being run over, and paint found on her body leads them to Dave Keppling, a substitute art teacher at the school where she taught science. Keppling claims that the two were dating and on the day of her death she seemed on edge. The investigation is distracted by screaming in the hallway only to find a young girl suffering from an overdose. Things get even more twisted when they go through Valerie's locked desk and find a journal documenting drug deals, bags with residue and a complaint arrest affidavit by an old student of hers, Charlie Sherid