What are some good made up horror/thriller movie names?

So, my friend and I are going to be directing a horror movie this summer about a girl who gets kidnapped and held hostage as just a prank by her friends for her birthday than (this parts still a little unthought out) her best guy friend, the leader, suddenly becomes crazy and kills most (maybe all) of her friends and drops them in her room one by one to make her suffer. We came up with the trailer but, not really the movie itself. For the trailer: She's seen with her friends then, she leaves and they whisper and they agree on a plan for the "best birthday ever" So she's gonna be riding ..(skates, bike, etc. idk what yet).. and gets pulled off and get duct tape over her mouth and everything goes black. Than slowly in the background "Ring Around the Rosie" is going to play and scenes of her being kidnapped and flashbacks and flashforwards play faster and faster all leading up to her being killed (in her head) Than there's gonna be a hint of light with a shadow in front of it and she's gonna say "You're the physco" or "You're the one" or something like that and then, it's going to say 'coming soon'. So, do you like the trailer too? The only scene I have thought of is over a speaker that goes intothe room she's being held hostage in (it changes the speakers voice) and he's like "Aren't you hungry? You haven't even touched your soup. You should be lucky my people bring you food" (Or something like that) And then the main girl (the hostage) is like, "Oh I'm sorry, you're the best effing KIDNAPPER EVER!!!" So, like the idea, any improvements? Any parts I should take out?? And most of all, what would be a good title??? Thx so much!! Oh yeah, we're also gonna try to make this into a book/novel too!! P.S. sorry this is so long!!!