DNA results usually take weeks instead of just days like usually happens on the show. [They have the lab in-house, so they don't have to send the samples off to another lab; and they prioritise the cases by importance, so samples from the 'big' cases go first. DNA tests themselves don't take weeks, sending them off to a lab, and waiting for the lab to get around to testing them, does.]

In a number of episodes people are shown eating and drinking in the laboratories. No reputable laboratory (which this is supposed to be) would allow its staff to eat or drink while on the job. They could contaminate samples or pick up toxins. [The CSIs always eat in their breakroom, not the labs.]

In the episode "Iced" the girl at the beginning takes off her bra. Later, when the Sara and Nick find her, her bra is on. [I noticed this when I saw it too. However, the bodies are not found in the last position we see them. There is no reason that after the couple finished making love, the girl couldn't have put her bra back on prior to falling asleep on the floor.]

In the episode "Way To Go", the season finale, the opening shows Jim Brass being wheeled in to the ER. He is intubated but no one is compressing the bag to facilitate his breathing, he would die without this action. [It's in slow motion. However, you can see the attendant on Brass's left squeeze the bag just before the scene cuts out.]

Season 7 Episode 8, Happenstance isn't available for submission yet, but when they run fingerprints on the envelope from "Dora" they put the fingerprints from the left side and the right side of the envelope together to make one print from two partials but this would be impossible as one partial would be from the right thumb and one partial would be from the left thumb by the way the envelope is held. [If it had been held that way, sure. But there's nothing that says it was. It's possible the daughter held it with her left thumb in two different places, leaving two partials.]

In Episode "Ending Happy," the wounds on Happy's throat don't substantiate the premise that he was shot through the throat with an arrow. The arrow has feathers on the end, which would have passed through the skin. It would have left a ragged edge, not perfectly round holes. [We can't say that the feathers on this arrow would have broken the skin, they could just as easily folded back and passed through without altering the shape of the hole.]

In episode "Living Doll" Brass and Grissom go to see Trevor Dell, one of the Dell foster children. Foster children do not take the last name of the Foster Family unless they are adopted and they never adopted any of the 13 Foster Children. [It's entirely possible that they shared the same last name without being related. Dell isn't that unusual.]

In episode 8-2 A La Cart When one of the kitties was telling of what happened with Hux, the scene shows him leaning his head on her shoulder her moving and him falling on the floor and the waiter rushing over and pressing the panic button. When the waiter is interviewed, he claims he found Hux slumped over the table and then checked for a pulse. He was already on the floor by the time the waiter arrived. [The waiter obviously lies, as he's the one who killed him. He wanted to make it sound like a heart attack.]

In episode 8-3, "Go to Hell": When Warrick and Nick are in the reverend's apartment and slice open the ironing board, Rick pulls back the cover and tape VI is lying beside the ditch furrowed out for the tapes to sit in. When the shot changes, it is in the ditch. [Not so, just watched the scene and all four tapes are side by side in the hollowed out portion of the ironing board. Tape I and IV's labels are on the left sides of the cases, while II and III are marked on the right. There is a fifth tape (with the red label) visible outside the "ditch" but neither it, nor any other tape, changes position during the scene.]

In the scene where Sidle is watching the gorilla documentary, the cover of the pamphlet reads "The Gorilla In It's Natural Habitat." The correct possessive form would be "The Gorilla In ITS Natural Habitat." [So whoever typed it made a mistake. Character stupidity and bad spelling are not mistakes.]

When the older brother is doing CPR on Zachary at the end it is obvious that it is a doll. [While I know this simply comes down to a matter of opinion, I disagree. As a nanny and a mother, I think this is very "life like" (considering it depicts a dead child) infant doll, especially considering the harsh light the face is under. They are not trying to hide anything.]

Forensics notices 3 small dots on a piece of paper on the ransom letter, and states its from the drum of the printer - and if the ransom note was from the printer of the family of the kidnapped child, the paper would have that same mark. Sara grabs a piece of paper out of the in tray on the printer, and says that mark doesn't appear. Of course - the mark is left when the printer prints and the paper gets fed through the printer. She took a piece of paper from the in tray - paper that has yet to go through the printer. [She has sent it through and set it in the out tray to wait for Grissom to get to the lab.]

When Nick and Greg are in the lab Greg is looking at his date's epithelials through the microscope. Nick wants him to look at some hairs so Greg puts them under the microscope without taking out the epithelials. [The entire scene is shot from shoulders up, so we can't see what Greg is doing other than he is clearly aware that Nick is prepping the slide with the hair. So it is reasonable to assume that one of the many movements we see in Greg's arms is his removing the epithelial slide in anticipation of Nick's request to view the hairs. At any rate, he obviously places the hair slide into a completely empty microscope.]

After the store clerks enter their pottery store and find the store robbed and a dead body, it shows the Las Vegas Police and the CSI team drive into the front of the building in patrol cars and Suburbans. On one Suburban, you can see the police lights on the right passenger side strapped on to the visor, on the other side you can see the rear-view mirror is directly above the steering mirror. Last time I checked, rear-view mirrors are NEVER above the steering wheel. [The key here is the phrase "ON THE OTHER SIDE". On the front view, as the vehicle passes coming towards the camera the mirror is properly placed. "On the other side" after vehicle passes the camera and the view is now back through the drivers window the CAMERA ANGLE makes is appear to be over the steering wheel, when in fact it is still properly placed in the middle where it belongs.]

Sara states that she couldn't eat meat because of Gil's last experiment with a rotting pig. But two episodes before (S01-15 "Table stakes") she was so exhausted that all she wants was a steak and a shot. [I am teetotal, but have been known to say "I need a drink". It's called a metaphorical statement.]

When Catherine goes to the autopsy of Kristy Hopkins, it is Dr Al Robbins who is performing it. However, she calls him David, who is a different coroner. [Character mistake, not a film mistake.]

At the end, Grissom tears a article from the newspaper. When he sticks it to the message board, it has nicely cut edges. [It's possible that he could have detoured to cut the edges, it just wasn't shown explicitly.]

In the flashback scene, where we see the abusive husband shooting his wife in the head against a wall in their home, Sarah and Grissom do not discover any plastering or other repair to the wall (although they do discover the victim's blood). However, during the victim's autopsy scene, we learn that the shot to the victim's head was through-and-through. (This is an important plot point, since it means that the bullet's distinctive composition is not immediately discovered.) Wouldn't the bullet have gone into the wall? Is there any realistic way the murderer could have repaired the damage without Sarah or Grissom discovering it? [The blood spatter went on the wall from the exit wound BUT the woman's husband shot her in the temple, right to left, (as Doc Robbins said) so it's possible that the bullet went somewhere else other than the wall.]

When we switch back to flashback mode and Holly is scratching the man who shot her, she was working a crime scene and therefore should be wearing latex gloves. Catherine takes the DNA sample from under her fingernail. Do gloves scratch? [You can see in both this episode and the previous one, that Holly has taken off her gloves before scratching her attacker.]

In the pre title sequence the rider calls the spooked horse "Gunner" yet when Gil asks Jim who discovered the body in the pipe Jim says "Flicka" as it cuts to the horse. [Jim is making a joke. There is a famous kids film called "My Friend Flicka" and Jim is calling the horse Flicka as a joking reference to that film.]