I haven’t seen the two Babysitter films that have already been made, but I know that our Ross Hughes really liked the first one and really disliked the second; you can read his review of the latter here. While it seems like the story felt complete by the end of The Babysitter: Killer Queen, apparently a post-credits tease suggested that the horror isn’t over just yet, that the Devil’s Book is still hanging around, just waiting to be picked up and used for nefarious means – and it seems that the plan was always to make a third movie.
Said director McG to ‘Bloody Disgusting’:
“There have always been three beats to this story. There’s the first beat, which is an adolescent Cole, who is having these strange feelings about the babysitter. But naturally it’s not appropriate for him to realise those feelings with a grown woman. In the second film he’s in an age where he can experience love… and we could explore that. I don’t want to talk about the third beat of the Cole arc. But should the audience like this movie, we’re ready to do the third one. Let’s see if people like this one.”
So it all depends on how popular and well received Killer Queen is.