It’s a trope so heavily ingrained in the grammar of the modern suspense thriller that we take it for granted these days. It’s late at night, but the protagonist is still awake, performing some innocuous task or other. Spooky music begins to dominate the score. Then something weird happens, something weird and scary and frightening! The protagonist barely has enough time to process her experience before–dramatic sting on the soundtrack!–she opens her eyes. It’s daytime, and she’s lying in bed. It was all a dream. Or was it?