Deirdre Page, who has been taken over by Eyghon, has lots of corpse-like make-up on her face and hands, but not on her legs.

Why does Buffy spare Drusilla? She knows she’s an ally of Spike and she could have easily staked the vampire and escaped.

Ford never told Buffy that Spike was the vampire he was going to give Buffy to - so how does she suddenly know?

Buffy arrives at the club an hour or two early to talk Ford out of becoming a vampire. Spike arrives a few minutes later - so Buffy couldn’t have been that early at all.

Angel comes over to Willow’s house just before she goes to bed. Why was Willow going to bed with full make-up on? It seems to be fresh.

Buffy’s stunt double’s hair is longer than Buffy’s when she fights in the alley.

When Willow is turned into a ghost she can’t move anything. But when Giles tells Willow to leave she moves a curtain and you can hear her shut the door.

The intruder Angel fights in Buffy’s house is a vampire - who was not invited in.

When Willow falls on the porch, her costume falls over her arms so that you can only see her hand sticking out. But when the ghost Willow gets up, you can see the costume is in a different position.

When all the children are first turned into monsters you see one of the children from the back and he’s wearing a green mask - it’s definitely a child not a monster. Yet one second later when you see him from the front he’s a proper monster.

When he’s watching the video tape, Spike tells his minion to rewind the tape, but if you look closely, the tape is being fast fowarded.

When Buffy and Willow are in the bathroom looking at the diary, Buffy says there’s no name for the girl drawn but if you look closely, it says Sarah.

When Buffy slams Larry against the vending machine, a diet Dr Pepper falls out, though this wasn’t a choice on the selection buttons.

Thad Luckinbill played R.J Brooks in Him. Thad was born in 1975, making him about 28 years old at the time of this episode - a whole 10 years older than Michelle Trachtenberg. Thad is best recognised as J.T. in The Young and the Restless, and Kyle in Undressed. He …

Indigo played Rona, a potential Slayer. Indigo has also been in 10-8, Boston Public, NYPD Blue, Any Day Now, Chicago Hope, Minor Adjustments and Sister, Sister. Her real name is Alyssa Ashley Nichols. Indigo auditioned to play Annabelle. She said in an interview with about.com: “I auditioned to play an …