Other mistake: At the start, it's nighttime when the unsub hides in the house of the soon-to-be victim who goes to sleep when her alarm clock reads 'Tue 11:06', and then we see the time morph to 'Tue 1:13' when the victim is sound asleep, before the unsub comes out of the closet to kill her. However, the time on the clock should actually read 'Wed 1:13'.
Other mistake: When Michael climbs up the rope to get to the room below the infirmary, the rope is hanging from the manhole cover, but he still manages to lift the cover whilst hanging from it. In the next shot where he looks down the manhole, it's clear that there is nothing other than the rope he could have held on to while lifting the cover. An impressive accomplishment, defying the laws of gravity. (00:38:00)
Other mistake: In the two scenes that occur at Lucky's base in Iraq, it is quite obvious the writers did not do much research about the Army in Iraq now, or the Army in general. Alcohol is not allowed on any US base anywhere in the Middle East during the current conflict, and this is true for all branches of the military. Even if Lucky did manage to procure contraband alcohol, he would not drink it openly, because an MP would arrest him within minutes. If he appeared in his Sergeant's tent drunk, he would be arrested, and severely disciplined, probably demoted. No one on a US base would be known as a habitual drunk, because anyone found drunk more than once would be either sent back to the states for rehab, or dishonorably discharged. Also, in the US Army, Sergeants are never addressed as "Sir." This is one of the very first things a new recruit learns at Basic Training, and it is drilled into him. It is extraordinarily unlikely that a soldier would slip up and call a sergeant "Sir" once, let alone repeatedly, as Lucky's buddy does. After the first time, the Sergeant would correct him.
Provenance - S1-E19
Other mistake: In the scene where Sam, Dean and Sarah go to compare the painting to the earlier photo of it, Dean, noticing the changed position of the razor, says, "Jared, check it out." He is speaking to the character Sam. The actor's name is Jared. [Confirmed in cast interviews].
Other mistake: In the opening sequence, Colby tells Helm at the airplane crash site that all of the passenger bodies have been moved to the L.A. Coroner's Office. However, later in the scene, there are shrouded bodies on the ground outside the command center tent.
Other mistake: Laura is in the security control room of the plant, and finds a Master Lock Console screen; she sees it has Biometric Scan access and comments to Rich "It's not a retina scanner. It works on biometrics." She then brings up a photo ID of an employee on the monitor, lifts up the scanner and places it against the monitor, to get access. Firstly, retinal scans ARE biometric. She should have said "It's not an iris scanner," which requires a physical eyeball to scan. Secondly, no monitor from the 2005 period would be high-resolution enough to fool a biometric scanner. (00:25:20)