Continuity mistake: When Reid tells Lila that her manager is dead, he has his hands on the back of his neck. When the shot changes, his arms are now lowered and under the water. (00:27:00)
Continuity mistake: When Lila gets the note that was taped to her door, she holds it by the side in the close-up showing the contents of the letter and from the top when she is crumpling it up. (00:15:30)
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)
Continuity mistake: When Gideon, Morgan, Reid and Greenaway are watching Hotch interrogating the suspect Tony Canardo there is a box on the table, then Hotch gets up and walks out of the room and the box on the table is gone. In the next shot on the TV the box has reappeared. (00:30:08)
Continuity mistake: When Gideon is talking when we first see him, the pictures behind him on the screen change instantly. It should be noted, that when we see the pictures change, there is the audible click and visual delay of a slide change which is not present on the instant change. (00:04:20)
Continuity mistake: Morgan gets a call from BAU and we see him holding his phone in one hand then two. (00:03:40)
Continuity mistake: When the pregnant lady came in with her child saying her 8 year old Matthew was missing, JJ sits her down and says she has a niece who is 8. We later learn that JJ's only sibling was her sister who committed suicide and who didn't have any children.
Continuity mistake: When the thief tries to steal the truck and the owner is beating him up, the passenger window behind the driver breaks. When his daughter later gets into the truck, very briefly the window is not broken. Then the next shot shows her in the truck, the window is broken again.
Continuity mistake: The same flashback of Roslyn Jareau giving her necklace to JJ is shown twice, but their dialogue is slightly different the second time.
Continuity mistake: Reid moves his gun to his side after the militia tell him he is begging for someone to take it. You can see it after they send Morgan to the bar. One second it's on his side, the next second it's back in front off his hip like always. (00:23:15)
Continuity mistake: While George Foyet is stabbing Agent Hotchner, the knife is extending from the handle. The blood is at the top of the blade, and as he removes it, the blood moves to the bottom of the blade, while the top remains clean.
Continuity mistake: When Reid is asked if he plays ball, the way he holds the football changes between shots. In one shot he holds it in 2 hands and in another he holds it in one hand. (00:14:30)
Continuity mistake: When Morgan finds the Glock 19, his grip on the clip changes between angles. (00:14:30)
Won't Get Fooled Again - S1-E3
Continuity mistake: When talking to Bale in jail and negotiating a transfer deal, his handcuffs disappear and reappear between shots. (00:35:05)
Won't Get Fooled Again - S1-E3
Continuity mistake: When in the house and the victim's wife comes in, Hotch returns his ID to his pocket twice. (00:08:00)
Compulsion - S1-E2
Continuity mistake: When Gideon profiles the campus patroler, the necklace's position changes on his shirt between the close and long shot. (00:17:40)
Continuity mistake: When Wallace brings the snake home he takes it out of the tank and holds it. Between the constant shot changes the snake's position changes entirely.
Continuity mistake: At the start we see Spencer explaining to Gideon about the Boston Strangler, his orange shirt is untucked at the front with both sides of his shirt being visible. Camera shows Gideon walking off and now only 1 side of his shirt is untucked. (00:05:10)
Continuity mistake: When the team visit the home of Marcie Mitchell, the older boy takes the baby to another room. The baby is crying, then as they are in shot walking through the door the baby is looking around and smiling, and as the door shuts we hear crying again. (00:11:20)
Answer: "The Boogeyman", s02e06. Spoiler alert: The kid is Jeffrey Charles and at that point he had already killed 3 other kids. Jefferey basically hated and resented other kids after his mother abandoned him and his father spent a lot of time with other children because of his job. Jeffery would lure kids Into the Woods and then beat them to death with his bat just because of hate, no particular "reason." The scene you're describing, Jefferey agrees to walk Tracy home when her "buddy" leaves her (at this point the FBI announced there's a serial killer on the loose and kids should walk with a buddy). Jeffrey gets mad at Tracy for walking too slow and for complaining, and he takes a swing at her, causing her to flee Into the Woods and have Jeffery chase her.
Bishop73