Revealing mistake: As the phone number 702-555-0192 is supposedly dialed, you can hear in the sound overlay that the last two digits dialed on the touchtone keypad were the same two digits. Then it shows a close-up of the cell phone dialing the above number.
Revealing mistake: The mom on Doc's table quite breathes, and her bottom lip moves slightly during the autopsy.
Continuity mistake: The dead news lady anchor's expression changes between shots from decedent to total shock while Sarah and Russell discuss the case.
Blood Drops - S1-E7
Visible crew/equipment: Near the start there is a visible mic boom just above Grissom's head to the left for a second. (00:03:23)
Other mistake: When Brass is asking if a witness or someone they are speaking with knows the victim, you can see the victim's name on the bottom of the crime scene photo before brass is supposed to know the identity of the victim.
Other mistake: When the kid Billy is recounting the murder scene, he states the killer grabbed a cookie from within the cow cookie jar. When Katherine lifts the lid afterwards, we see bloody fingerprints up inside the top, instead of on the lid. Indicating the killer had to have carelessly reached inside the cookie jar with his fingertips, which would have been impossible.
You Kill Me - S8-E8
Character mistake: While looking at the evidence that was knocked onto the floor, Greg picks up a woman's shoe in his bare hand causing his finger prints to get on it. When investigating a crime, even one in a "whodunit" game, he should have been wearing gloves.
Factual error: When Gris and Teri are looking at the bones that were found in the desert and discussing an electric saw, Teri is talking about the medial condyle of the femur but the bone they are looking at is the tibia (seen by the flatness of the tibial plateau - the femoral condyles are much more rounded, and the triangular shape of the shaft of the bone). It makes no difference to the story but having gone to the lengths to get the scaphoid and cuneform in the right place, it would have been nice not to get two major bones, that look completely different, mixed up.
Character mistake: When Russell is reading the bio for the suspect who had dressed as a reindeer at the party and was looking for her contact lens, the bottom of the page lists "Identification Databases Checked:" and lists several states and 5 cities under each one. Alabama and Colorado have the same 5 (Alabama) cities listed. Also, the form lists several pieces of information - Class, DOB, Height, Weight, Eyes, Eyes, Hair, Restrictions, Contact Lens Serial No and Criminal History and Occupation. (Yes, "Eyes" is there twice.) The first "Eyes" field lists a name (emergency contact?), which illustrates how badly the prop department prepared this form. Lastly, despite the suspect's DOB being 04.12.1987 (either April 12 or December 4), and this episode taking place in December 2013, Russell states that she is 23 (but should be 26). (00:15:20)
Continuity mistake: The son of a CSI is waiting in a hospital hallway. He is sitting on a bench with his elbows on his legs and his hands fisted together on his chin, holding a red jacket. Morgan approaches him, and the next shot shows him with one his left hand across the right leg and the right under his chin. The jacket is also in a completely different position.
Continuity mistake: In the scene where Riley Adams takes a victim's wallet from David Phillips, she takes the wallet with her left hand with no glove on. Next shot Riley has gloves on both hands.
Cats in the Cradle... - S2-E20
Continuity mistake: Marcie Tobin's BMW 7 Series changes from a newer (at the time) E38 model to the first generation E23 when it explodes. Obviously the production couldn't afford to blow up a brand new car so the older model was substituted.
Continuity mistake: When Brass calls Dr. Ray and gets his voicemail instead, Brass raises the phone to his ear twice. (00:02:00)
Character mistake: When Catherine is being questioned about the victim, it is mentioned that her parents were killed in an industrial accident in Odessa. To which Catherine replies, "Russia?", and is answered in the affirmative. Odessa is a major city in the Ukraine, not Russia.
Factual error: When Nick picks up the contact lens from the PI's body, you can tell from the way it bends while he is holding it with the forceps that it is soft and pliable, as if it had just come out of the eye. However, after 6-12 hours outside of an eye or a contact case (the amount of time David says the PI has been dead), a soft contact will dry out and become wrinkled and hard.
Continuity mistake: When Brass is interrogating the bartender, there is a cup of coffee in front of him. In the next shot of the bartender's face, the cup is gone. It reappears later on in the scene in a shot from the side. (00:27:00)
Character mistake: Catherine Dent's character, Kay Marquette, plays the Holmes character Irene Adler with an English accent. Adler was an American, as mentioned by Watson in "A Scandal in Bohemia".
Continuity mistake: When the fannysmackers attack Greg, they smash his car back window out. The next morning, when Warrick and Nick are processing the scene, Greg's car window is completely intact.
Revealing mistake: When Nick is in the shed in the desert, sunlight is coming in through hundreds of holes in the walls and roof. Since the sun is in one spot, all beams of light should be in the general same direction. In this scene they come from at least 5 different directions, with some originating from a light source very close to the outer wall (causing beams in a radial pattern).
Getting Off - S4-E16
Revealing mistake: When Sarah and Catherine are looking over the body of the dead clown, in one scene his eye flutters and in the next he distinctly takes a breath.
Answer: He doesn't have the authority to arrest him - when anyone is arrested in the show, a police officer does it. Also he tells Ty that he is going to be submitting his case findings to Ty's insurance company, who would no doubt contact the IRS, who then would have him arrested for fraud etc.