ASSOCIATION TO PROMOTE ACCEPTANCE OF PLUS-SIZED PEOPLE
The convention where the CSIs were called to investigate the murder of a man who was crushed to death by a heavy-set woman in bed.

BRAUN, SAM
Catherine Willow’s onceestranged father and wealthy Las Vegas casino owner who somehow— and quite mysteriously—happens to find himself connected with murders.

CODIS
The Combined DNA Index System (CODIS) database is used to find a match to the samples that CSI investigators find at crime scenes.

DISCO PLACID
No, not a serene dance music, Disco (played by Ricky Harris) is the team’s sound expert who hears in perfect pitch and specializes in audio and voice comparisons.

ENTOMOLOGY
Grissom, a trained entomologist, and the CSI team use insects and bugs to estimate a body’s time of death by analyzing the amount of bugs and their location.

FLUOROSCOPE
The special imaging tool used by CSI that displays X-ray images on a fluorescent screen. It’s like a portable X-ray machine.

GIBBS, HOLLY
The CSI team member appeared in the pilot episode but was shot to death.

HAVILAND, TOM
The murder suspect who bludgeoned a woman in bed after finding out her gender wasn’t female. His high-priced legal team put the CSIs under the microscope, casting doubt on their work. This role was played by One Tree Hill’s Chad Michael Murray.

INFANTILISM
Men who wear diapers and love to be coddled.

JACKPOT, NEVADA
The town that Grissom visits in Episode 407 to investigate a mysterious head he received in the mail. While there, Grissom finds the locals somewhat hostile and his investigation kit missing.

KING BABY
In this bizarre episode, the CSI team’s investigation into the death of a wellknown casino owner leads them into the strange world of infantilism—men living like babies.

LADY HEATHER
Whips, chains and leather are some of the favorites of this recurring character and dominatrix (played by The O.C.’s Melinda Clarke), who seems to have a strange hold on Grissom.

MILLANDER, PAUL
This serial killer at large seems just out of reach for the CSI team, pushing Grissom and other investigators to the limit. Later we find out he is none other than Judge Douglas Mason.

NARCOCORRIDO
A Mexican music/lifestyle that glamorizes violence and brutality, which the CSIs discover after a dead baby rattlesnake is found in the throat of a decapitated female head.

O OTOSCLEROSIS
The cause of Grissom’s hearing loss, this bony growth begins to form around the base of the stapes.

PETERSEN, WILLIAM
Petersen not only plays Gil Grissom, but the actor also serves as one of the show’s executive producers.

QUENTIN TARANTINO
The Oscar-nominated director and CSI enthusiast offered to direct the 2005 season finale, bringing his unique style and a story, “Grave Danger.”

RED CREEPER
When regular fingerprinting technology has failed, the CSI team uses Grissom’s own homemade fingerprint powder.

SART KIT
A Sexual Assault Response Team’s kit for collecting and storing samples is used by the CSI team to gather evidence from sexual crimes.

THROUGH & THROUGH
You see the bullet wound, but where’s the bullet? When it comes in one side and goes right out the other, it’s called a through and through.

ULTRAVIOLET LIGHT
With radiation beyond the visible violet spectrum, this light is used to detect substances that are otherwise invisible.

VEGA, SAM
Homicide Detective Sam Vega, played by actor Geoffrey Rivas, has appeared on a slew of hit series, including Numb3rs, Cold Case and JAG.

WESTERN CHAMPIONSHIP LOGOS TOURNAMENT
This faux gaming tournament, a cross between Scrabble and Boggle, found a contestant dead with an “S” tile lodged in his throat.

“XX” (EPISODE 417 )
The popular episode features a woman inmate found tied underneath the prison bus and whose severed arm falls and hits a passing car.

Y-INCISION
A typical incision done during autopsies. It looks exactly how it sounds—two slices from the shoulders meeting one running down the middle of the chest.

ZUIKER, ANTHONY E.
The man behind CSI, Anthony Zuiker is the co-creator and executive producer. He is also responsible for the series of popular spinoffs, CSI: Miami and CSI: NY.