Where exactly did Wesley get the key to the chains that Angel had Faith in?

Buffy goes into Willow’s room and pulls the left door shut but in the next shot she’s just shutting the right door.

Detective Stein questions the witness and asks “You heard the man scream at what time?”, but Finch never actually screamed when Faith stabbed him.

In Bad Girls, the day after Finch’s murder, Buffy went to Faith’s place. This episode begins with Buffy waking up from a nightmare, then she goes to school. This means that it is at least the second day since the murder. But the detective questioning the witness at the scene …

How did Wesley get into the bathroom before Cordy and Vamp Willow? He was running towards them in the hallway, but somehow got in there first and came from behind Cordelia.

In the scene where Vampire Willow licks the real Willow’s neck, real Willow’s hair is tucked behind her left ear, but when the camera switches to Vampire Willow hair hair is hanging loose.

In the Mayor’s office, the reflection of Angel’s hand can be seen in a Mayor’s name plate.

When Cordy walks into the library to ask Wesley to dinner, the sound her shoes are making doesn’t match the pace she is walking at.

The lunch lady’s stunt double is clearly nowhere near the same shape or size as the actress.

How was Jonathan going to kill himself with that high-powered rifle considering it was so long and his arms were so short?

When Buffy first looks up at the clock tower, the clock says 12:40, but when she looks back up a moment later, it says 12:10. Shortly before this scene, it says 11:00.

When Angel is sitting on Buffy’s bed, sun is shining in but he doesn’t burst into flame.

When Buffy and Angel are talking at the mansion, Angel’s necklace moves from inside his shirt to outside as the camera switches angles.

If the demons were telepathic, why didn’t they anticipate Buffy’s moves when they were fighting?

As Willow and Buffy talk about staying in Sunnydale at the end of the episode, the lip-synch on Buffy’s mouth is way off time in the long shot.