Revealing mistake: When Morgan is typing "Cult named Forever People," his phone is typing it automatically. His fingers aren't even tapping the correct letters. (00:19:45)
Other mistake: When Hotch, Morgan and JJ review the footage from the first murder, they are able to zoom extremely close on the victim's hand. Why don't they do the same with the car license plate as the killer leaves? (00:21:45)
Factual error: The flashback shown is from 1978, when Virginia license plates had six characters, however the license plate shown on the car is the current version with seven characters. (00:37:00)
Factual error: Rossi recognizes a "typical Dutch gesture" The suspect hits his forehead with his hand and then moves it towards another person, saying that the person is "crazy" This gesture is German. In the Netherlands we use a different gesture. We point to our forehead with our index finger and then point at the person we think is crazy, with that same finger.
Protection - S10-E22
Continuity mistake: When JJ picks up Lizette Castro in her car to take her to her son, JJ gets Lizette to confess about the man in the pictures. We see JJ stop the car outside In the Dark by some trees before a flashback plays. After the flashback, it looks like the car is in some sort of parking house. (00:14:16 - 00:15:16)
Protection - S10-E22
Continuity mistake: The old lady victim under the bridge has a change in clothes. When the shooting happens she is wearing a red jumper and what looks like flowery red top, when the team arrives at the crime scene she is wearing a grey jumper and a white polka dot top. (00:15:54 - 00:26:30)
Suggested correction: The change of clothes happens in every crime scene/flashback to show us the killer's delusion. If you pay attention, it happens with the girl whose boyfriend gets killed and also with the cop/mailman.
Protection - S10-E22
Continuity mistake: In the final stand off, Daniel fires 16 rounds through the door/wall at the team. We've already been told his gun only holds 14 bullets. Not to mention without reloading he fires a few more bullets shortly afterwards.
Protection - S10-E22
Continuity mistake: The vigilante is on the couch drinking vodka. First shot it's in his right hand then the next shot it's in his left.
Target Rich - S11-E7
Character mistake: When the unsub puts the lock on the woman's collar, he hooks it onto the part where a leash would go. She could easily take the collar off. Later, the lock is on a different hook that is pushed through the collar, so she would not be able to escape. (00:19:10 - 00:33:30)
Character mistake: When Derek and Rossi are in the morgue, you can see the "corpse" swallowing just before the scene changes.
Factual error: Violet is seen wearing Hood style flip-flops where there is a denim like covering just beyond the sandal straps, but this scene takes place in 2001, 12 years before those shoes were available.
Suggested correction: It actually looks like she is wearing wide leg jeans which cover her feet and shoes giving that illusion.
Continuity mistake: After Garcia traces the phone call, Morgan and Rossi are shown driving to the area of the cell tower. When the shot is from outside the car, the car is a 10th generation (07-14) Chevy Suburban. When the shot changes to inside the car, it's an 11th gen (15-16).
Audio problem: Garcia is typing on a flat, foldable rubber keyboard but the keys' sound is loud like from a plastic keyboard. The rubber keyboard shouldn't make noise. (00:39:00)

Other mistake: A mugshot of a suspect is showing with some personal information. Name, license number, address, etc. The field for "Home address" shows a valid address but "Work Address" shows "Male." The correct field title should be "Sex." (00:40:00)
Other mistake: There is a mugshot of a 35 year old suspect on Garcia's computer. According to what she is saying, the suspect's mother died 10 years ago. A photo shows her with the suspect and he looks exactly the same age as he does now. (00:40:00)
Continuity mistake: After Emily shoots the unsub in the head and he falls on the bed, the gun falls beside him. A second later they show her walking over to his body to remove the gun from his hand. (00:51:00)
Character mistake: When they are delivering the profile, Rossi says "he's already picked his next victim; an adolescent boy." The victim is a girl.
Suggested correction: Rossi is talking about the next victim after the girl.
Factual error: Agents are staking out a suspect in Boynton Beach, Florida. A truck approaches and they can see the license plate on the front of it. There are no front license plates in Florida. Only rear.
Continuity mistake: In the episode the team is discussing the unsub. He was a man who believed he was Tara's brother. They do not know his name yet. JJ says "He must have put Gabriel's whole life inside of Desmond". Only later does Garcia find out the unsub's name is Desmond Holt. (00:15:22 - 00:18:20)
Character mistake: Rossi reacts upset to the phone call before the killer starts singing happy birthday. (00:06:25)