Quill - If you see someone writing with a quill then you are in the old times. The old times are subject to bubonic plague, werewolves, and dragons. Also a weird old woman with a messed-up white eye.
Quick - In a horror movie, being quick is good. It is also very good to shout 'come on, quick' at your fellow survivors wherever possible. In a horror movie, any sexual encounters will also be 'quick' due to editing constraints.
Quest - A quest is more the realm of fantasy than horror, but if you do find yourself questing in a horror film then you should don your level 8 machete of wounding and get your kill on.
Queensland - Queensland is in Australia. In Australia, everything wants to kill you!
Quip - The more heroic quips you can make in the face of danger, the more likely you are to make it to the end. You will still likely die hoever, but rest assured you will have a suitably witty one-liner prepared for just that occasion.