Visible crew/equipment: A possible cameraman's hand with a wedding ring holding a bar with the camera is visible as one of the victim looks down a two way route. (00:24:50)
Visible crew/equipment: After the BAU capture "grandfather," when Hotchner has Reid on his cell's speaker, just as Reid says, "He spent 22 months in prison...," we can see the shadow of the boom pole and mic on the ground behind Hotch. (00:33:50)
Birthright - S3-E11
Visible crew/equipment: When Prentiss, Morgan, Rossi, and Caulfield go see Mary Wilkinson, in the wide shot just as Caulfield says, "Hello, Mary," the second camera filming from another angle is visible at the right side of the screen. Additionally, later when Chrissy confronts Charlie she's wearing one earring in her right ear, but after she shoots him that one earring is in her left ear. (00:18:45)
Visible crew/equipment: When Captain Navarro and the team are at the elderly victim's home, after Elle finds the bead from a necklace, in the next wide shot of Morgan, Navarro, Gideon, and Hotchner, the red T-mark can be seen on the floor in front of Gideon.
Visible crew/equipment: After the press conference, while Emily, Rossi, and Derek are standing beside the SUV, when Captain Lancaster walks over to them we can see the four chalk T-marks on the ground where they all stand.
Visible crew/equipment: There is a crew member crouching behind the plant during the scene when Reid is searching the house for Maggie. When Maggie just enters the shot, you can see the crew member.
Visible crew/equipment: When Katrina Townsley's driving while talking on her cell phone the unsub is driving behind her, and we see that she's alone in her car, but when the unsub rear-ends her car the second cameraman is sitting in the passenger seat with a handheld camera, filming Katrina's close-ups.
Visible crew/equipment: When James Charles, the guidance counselor, says, "It could be someone you know, or it could be a stranger you pass at the grocery store," the actors' red T-marks are visible on the floor at Reid's and Gideon's feet. Then when Charles continues to say, "gathering information on the case," we can also see the actor's white T-mark beside the counselor's feet, where he will stand after he introduces Gideon.
Plain Sight - S1-E4
Visible crew/equipment: When the BAU are presenting their profile of the unsub, the actor's T-mark is visible on the floor in the shots facing Captain Griffith, who's sitting on the desk, when Gideon takes a seat on the chair.
No Way Out - S2-E13
Visible crew/equipment: When George is talking about the school bus, you can see the shadow from a microphone in the bottom left hand corner. (00:35:25)
Visible crew/equipment: After the three people at the restaurant patio are shot it cuts to the black screen, and in the next shot as the camera pans over the blood stained table, the red T-mark is visible on the ground in front of Gideon's feet. (00:13:15)
Visible crew/equipment: A crewman's left hand (with wedding ring) on a black metal railing is visible on the left side of the shot of the woman at the corridor intersection. (00:24:57)
Visible crew/equipment: As Rossi comes to Morgan's rescue you can see a guy behind Agent Rossi seemingly holding a camera. A few seconds later Morgan gets up and right before he turns to punch the henchman guy you see the same camera guy again. (00:34:33)
The Fisher King: Part 1 - S1-E22
Visible crew/equipment: When Elle arrives back at her home the camera pans and you can see the face of a man in the mirror. A man who is not the Fischer King as he has no facial burn marks on him. Potentially simply a stand-in for the character or the actor without the makeup as when the Fischer King is going to shoot Elle you cannot see his face.
Visible crew/equipment: When the team enters the house of the unsub it is dark. You can see a second camera man twice off to the side who is getting the close ups of the team coming through the door. (00:32:00)
Visible crew/equipment: After Prentiss and Morgan catch Eric and his girlfriend in the park it cuts to Prentiss and the girlfriend in the interrogation room, and as the camera tracks backward from the door's window we can see a nice reflection of the moving camera and also a crew member standing behind Hotchner.
Visible crew/equipment: When JJ and Derek get to the bar to talk to Harris Townsend, while they're still outside in the parking lot, right after Derek tells JJ not to turn her back on the door, the reflection of the moving camera can be seen on the pickup's back window as they walk to the door.
Visible crew/equipment: When the trailer park manager leads Rossi and Reid to Goehring's trailer, right after he tells Reid, "Piece of advice, pipe cleaner, way you're wearin' that gun...beggin' someone to take it off you," the cameraman and camera cast shadows on Reid as he walks by the camera.
Visible crew/equipment: When Hotchner, Callahan, JJ, and Rossi surround Frank's car on the private property, just after Callahan sees the leg on the seat, when she opens the passenger side door the reflection of the standing male cameraman/crew member is visible on the surface of the car, between the windows.
Visible crew/equipment: When the suspect first enters the house, their helmet reflects all the camera and filming equipment. (00:04:20)
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