Continuity mistake: When Voight is making his "I lie for you speech" he starts talking with his office in the background but the next shot has him standing by the stairs on The Other Side of the floor.
Chin Check - S1-E3
Factual error: The cops raid a house and find some rifle ammunition. The female cop says "cop killers." A few seconds later three cops are looking at the bullet and a box used to store it, it appears to be a 5.56x45mm round used in the AR-15 style rifles. All high powered rifle ammunition, doesn't matter if its bullet is fmj or armor piercing will go through soft armor which is what all police officers wear. Such ammo is available to civilians in every store. All rifle ammo could be considered "cop killer." (00:03:50 - 00:04:56)
Climbing Into Bed; You Never Know Who's Who - S3-E5
Factual error: S3/E6: You Never Know Who's Who - Lindsey is searching a dark house with her weapon and flashlight. Her hands are in the wrong position. Her hand with the weapon should be above her hand with the flashlight, because if she fires her weapon the slide will hit her hand with the flashlight and jam or injure her hand. (00:04:48)
The Song of Gregory Williams Yates - S3-E13
Other mistake: Lindsay is video calling on Nellie's mom's phone to Yates. Bought at the scene of a fire, tells Finn to text Lindsay and let her know about the fire. We see the text come in, but it's on Nellie's mom's phone, not Erin's. (00:31:00)
A Night Owl - S3-E14
Continuity mistake: When the woman came into the precinct and showed Erin and Voight her daughter was taken on her phone, she dropped her hand after Erin took it. The very next shot from the reverse still shows her holding the phone as does Erin.
Continuity mistake: Opening sequence, they are called to Kinzie and Dearborn. They instead show up at Franklin and Erie. After a short run down an alley, they call in their location as 3233 S. Princeton (more than three miles south of where they were, and nowhere near the Loop). (00:01:34 - 00:02:50)
Other mistake: When Voight finishes talking with Rev, Voight walks away. When he does, he goes in the opposite direction from where his car is parked and on the wrong side of car for a driver. (00:27:05)
Continuity mistake: During the street scenes it appears to be fall with leaves on the ground, grass green and streets and sidewalks dry. However, when police raid the park worker's house there is snow on the house roof and on the ground. When the police stake out the same house, there is no snow on the house roof or ground. (00:36:00 - 00:41:00)
Other mistake: Kim and Al chase the suspect into a wooded area. As Al is walking through the woods there is a puff of smoke from behind the the trees in front of him, but the suspect steps out from behind him.
Continuity mistake: Officer Jay Halstead shoots a suspect and jumps in to render first-aid. As he goes to render aid he tosses his police handheld radio. Shortly after, his partner calls him on the radio - he answers the call immediately and the radio is in his hand. He doesn't appear to reach for it and if he was rendering aid to gunshot victim he would need both hands. (00:19:00)
The Thing About Heroes - S5-E2
Continuity mistake: The bulletproof vest and pants Officer Ruzek is wearing change colors from dark blue to maroon and back to dark blue. The same for the bulletproof vest worn by Officer Atwater. (00:21:46)
The Thing About Heroes - S5-E2
Other mistake: Officer Burgess kicks in a door with a lock and deadbolt and does no damage to the door frame. (00:46:21)
Visible crew/equipment: When Antonio is talking to his CI, you can see the green and red place marking tape on the ground.
Factual error: When Detective Olinsky calls out a license plate to Detective Upton he uses the wrong police phonetic alphabet. He uses the word Andy for A instead of "Adam", as is used by Chicago police. (00:35:00)
Continuity mistake: Toward the end of the show Voight and Ruzek are in their car chasing the suspect who is running. Sgt. Voight gets out of the vehicle first and is chasing the suspect toward the stairs only a few yards away. When they get to the stairs Ruzek is in the lead.
Continuity mistake: Dawson and Atwater are tracking a suspect at a bus station locker. The suspect takes the bag from the locker and they take off after him. They pass the same bank of lockers twice.
Character mistake: Before Kevin Atwater and Doyle fight they both put their badges and guns down on a barrel. After Atwater beats up Doyle, he retrieves Doyle's gun and holds it to Doyle's head and drops it to the ground. Atwater walks away, but he never retrieved his own badge and gun before walking away. The gun and badge are on the barrel, and he does not return to retrieve them. (00:58:37 - 00:59:32)
Character mistake: Alvin Olinsky appears in this episode investigating the bombings in which Trudy was involved, but he died at the end of season 5.
Suggested correction: Where do you see Alvin (or even the actor Elias Koteas) in the scene? I couldn't see him in this episode.
Continuity mistake: Ruzek and Hailey are waiting to swap cash for guns. The pickup truck drives up very close to them and stops but then when the driver exits the truck he is parked a considerable distance away.
Center Mass - S7-E14
Continuity mistake: While Rojas and Upton are questioning their suspect in the interrogation room, the plate with a sandwich is constantly shifting position from near the detectives to immediately in front of the suspect with no-one touching it.
