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A trailer explodes, killing a man and a woman. The neighbors in the densely populated trailer claim to have seen nothing. The team, reunited, investigates the crime scene and finds suspicious tire marks as well as paint transfer from a car all over the place. Catherine and Warrick are pulled away from this case when a dead body of a scantily-dressed woman is found in a bad neighborhood. While on this case, Catherine finds out that Warrick is married. Back at the lab, Grissom receives an audio tape from Nick's kidnapping case. On it, there is evidence suggesting that the perpetrator had an accomplice. Written by Ploy P.
All Episodes - S06
EPS01
A trailer explodes, killing a man and a woman. The neighbors in the densely populated trailer claim to have seen nothing. The team, reunited, investigates the crime scene and finds suspicious tire marks as well as paint transfer from a car all over the place. Catherine and Warrick are pulled away from this case when a dead body of a scantily-dressed woman is found in a bad neighborhood. While on this case, Catherine finds out that Warrick is married. Back at the lab, Grissom receives an audio tape from Nick's kidnapping case. On it, there is evidence suggesting that the perpetrator had an accomplice. Written by Ploy P.
EPS02
Julian Harper, a famous movie star, is found dead in his hotel suite after a wild night of partying and sex. Although his room has many traces of drugs and alcohol, his tox report shows that he couldn't have died from an overdose. He suffocated to death, yet his neck shows no signs of strangulation. Another case involves the death of three people, two Laotians and a taxi driver. One of the Laotians, as well as the unlucky cabbie, died from gunshot wounds. The other man, found in his car, died from excessive blood lost. This case leads the CSIs to a laundry facility that employs many South East Asians. Written by Ploy P.
EPS03
When a woman dies on her staircase, the team uncovers marital infidelity and an even bigger secret during their investigation.
EPS04
A UFO cult commits mass suicide in an underground complex shortly after apparently dumping a body in a garden. When the CSI team discover their bodies, they suspect two members are still alive and go looking for them.
EPS05
With Grissom teaching at a conference, Nick Stokes and the remaining CSIs investigate a murder of a family in a house in a small town outside Las Vegas. In the house there is evidence of violence, blood and gunfire. The rest of the team thinks that the entire family was murdered, but Nick has the feeling that the little girl, Cassie, is still alive. So they start investigating and discovering the motive why the family was murdered (an illegal green house full of pot) and a chew gum in every place they go for searching clues. So Nick believes that Cassie left them telltale clues in the form of gum drops. Written by James_ Corck
EPS06
A woman is found dead on the floor of her house near her baby's cradle. The gun in her hand, as well as a suicide note and a fridge-full of breast milk, suggest that it was a suicide. The lack of blood on her hand, however, indicates that she was murdered. During autopsy, it is revealed that her hymen is still intact; she is still a virgin despite having given birth to a son. Meanwhile, Grissom is called in by Ecklie to refute an experiment involving insects which were used to create a time-line for a murder case. Written by Ploy P.
EPS07
The episode opens with a high-speed chase involving many cars. During the chaos, one of the police officers is shot and killed by another police officer. Brass and Sofia worry over who is responsible. Meanwhile, the CSIs have a crime scene spreading over many blocks, with hundreds of bullets scattered all around, to process. Written by Ploy P.
EPS08
The CSIs continue to process the evidence collected from the high-speed chase. They must also find the bullet which killed a police officer to determine who shot him.
EPS10
The CSI team is called to help when Karen Mathews reports her son, Jesse, missing from a playground where he was playing on the swings. Witnesses report seeing a man with a blue baseball cap near the swings. Clues in the park bathroom include blood and the boy's underpants. The boy is eventually found in a store, accompanied by a woman with a man fitting the earlier description. But the couple with the boy claim that he is their son Adam, while Karen insists he is her missing son Jesse. Written by John Hosking
EPS11
The CSI's investigate the death of a very hairy man. At a quick glance, the body can be easily mistaken for a werewolf. The man died from a gun shot wound. He, along with his sister, has a rare genetic disorder which causes excessive hair growth. Written by Ploy P.
EPS13
Someone tries to kill a diva called Lois O'Neill, who was related to the mafia years ago, and a waiter is killed instead. The CSI investigates the case, but more than ever, nothing is what it seems.
EPS14
A man walks into a shabby apartment and shoots the occupant. On his way home, a teenager's car crashes into his car. Ally Sullivan insists on calling the police but the man refuses. As he leaves, he sees her texting her phone. Thinking that she's calling the police, he kills her. The CSIs have a hard time finding this killer as he knows how to cover his tracks really well. He is truly a professional. Written by Ploy P.
EPS15
A half-naked woman is found half buried in the desert with a branding on her arm. She has no hair and is missing her right hand. The woman turns out to be Lady Heather's estranged daughter. The autopsy reveals that the woman was a victim of an experiment and starved to death. The team investigates the Betz Clinic where the deceased underwent a sleep therapy session for her insomnia. Written by Ploy P.
EPS16
Excessive smoke coming from a fire place alerts the fire department, which in turns calls the CSIs as a charred body is found inside the chimney. The body is burnt beyond recognition. A gym membership card found on the body identifies him as the son of the house's owner. The opportunity to search the house leads Catherine and Warrick to look for any evidence about a one-year-old disappearance of a young girl who was on her way to this house before she vanished without a trace. Written by Ploy P.
EPS17
The team is followed by a reality TV crew as it investigates the vicious rape of a real estate agent. Thanks to a video surveillance system, suspicion falls on someone taped entering the building and leaving flowers at the victims door, but forensics clears him. Suspicion then falls on the possibility that the perpetrator is a fireman when they find trace evidence of a fireman's uniform. Written by garykmcd
EPS18
A teenage boy, Marlon, is being prosecuted for a murder of one of his female classmates, Stacey. During his trial, his 12-year-old sister Hannah takes the stand, and admits that she herself murdered Stacey, not Marlon. The CSI team is now faced with a strange dilemma - two confessions for the one murder. Collusion seems unlikely. As Hannah is a genius, in high school already, even though her confession sounds convincing, some CSI members suspect that she is making up her confession and could not have physically committed the murder. It now has to be decided who should be prosecuted for the crime. Written by Henrietta G. Molgardy
EPS21
A criminal defense lawyer is murdered at her son's wedding and tied to the back of a car with beer cans. It is later revealed that she had a bad attitude at the bride, the groom's father, and basically everyone else.
EPS22
The team investigates the death of a man with a designer suit and the keys to a Ferrari, found dumped in a back alley. Their search leads them to believe he went down fighting and was dragged through a hall with wet paint on the walls. Eventually, they are led to a service in Las Vegas that orchestrates the 'perfect weekend' for an unsuspecting target by uncovering their fantasies and hiring doctors to start and play a part in those fantasies. Written by Alejandro
EPS23
Mrs. Cutler is found dead, shot through the mouth, in her own home, which shows no signs of forced entry or disturbances. Her husband, Mr. William Cutler, is missing, only to be found later, alive, at his office where all of his co-workers were shot dead. He left the bloody scene with only a minor injury. All of this quickly becomes a hostage situation when Mr. Cutler, after shooting a security at a casino, holds a woman hostage. Written by Ploy P.
EPS24
While Jim Brass is in surgery the team has two cases to tackle. The first involves a man, found decapitated on train tracks, with a 19-inch waist. Further investigation reveals that he wore a wasp corset, as was fashionable with gentlemen during the Civil War. The other crime scene is in a hotel room where a man is found in his boxers, dead, on the bed. Scattered around the room are evidence of a wild night of alcohol, drugs, and sex. Ellie, Brass's estranged daughter, comes to visit her father from LA. Written by Ploy P.