<s>[INST] This is the start of what I hope will be a long-running series of questions asking for help with the content of a horror anthology series. I've got a basic idea for an episode, and I want to make it more interesting, to add more depth, and to make it more terrifying. The episode is set in a abandoned asylum on the outskirts of town, and centers around a group of friends who break in to explore it.

My question is: what can I do to make the setting more ominous and foreboding?[/INST]