When Buffy goes to turn on the computer to delete Willow’s files she never touches the monitor ‘on’ button. She touches the area above the button, yet the screen pops on.

Fritz appears suddenly behind Dave to kill him, when Dave tells Moloch he can’t hurt Buffy. Moloch then writes on the computer screen to make it look like a suicide… but where did Fritz come from?

When Giles leaves the library after discovering the blank book, why don’t we see him in the window of the room he goes into?

How does Buffy manage to follow Dave to the CRD building so easily when he’s driving and she isn’t? I know she has super powers but she’s not that fast!

When Buffy and Xander discuss who Willow’s internet boyfriend could be in I Robot, You Jane, there is a blonde girl behind them in a pink shirt, who can then be see both walking and running behind the two in different shots and in different directions. Look for her at …

Moloch sends Fritz details of Buffy via the school’s computer system. We see two different versions of her school record on the computer. In the second one, her status changes from ’sophomore’ to ’senior’. Her date of birth also changes from 24 October 1980 to 6 May 1979. In Nightmares, …

How did Darla know that Angel would arrive at Buffy’s house, just in time to be found with Joyce?

Joyce screams when Darla bites her. The scream is exactly the same as Buffy’s, used earlier in the episode.

While Willow is trying to tutor Buffy in the library, Darla watches in the background. Her reflection can be seen in the side of one of the bookcases.

Why did Buffy let Angel stay at her house for a whole day instead of making him leave the next morning? She didn’t yet know he was a vampire and so couldn’t go out in sunlight and there was no danger that The Three (all vampires) could pursue Angel in …

When exactly did Buffy call Giles and tell him about the three vampires so that he could research it from midnight until six?

When Angel and Buffy are running from the Three, and take refuge in Buffy’s house, one of the Three gets his arm through the door before Buffy forces him back out. But he was a vampire and also uninvited, so how did he get his arm in?

When Buffy is walking home from the Bronze, she passes a window with a green light shining on it, before being attacked by The Three. She and Angel then escape, and they pass by the same window… so either Buffy was walking the wrong way home or they took a …

When Buffy fights the Zookeeper at the end of the episode, her stunt double’s hair is noticably different to Buffy’s own.

Some of the video clips of hyenas that Willow watches on her computer monitor are actually of African wild dogs.