Minor character cop a week off retirement - might as well book the funeral now.
Major character cop - well, I'll be surprised if he has a stable family life and does everything by the book.
Pretty woman who needs to look intelligent - pair of glasses should do it.
Evil character - inexplicably laughs all the time Edit : oh, and is English
For some reason, when threatened by monster/alien, split up into the smallest groups possible
Mysterious noise - go and investigate - pretty sure a cat will be making an appearence.....
.....and I wouldn't lean back against a wall and breathe a sigh of relief, if I were you