Since you haven't seen it yet, I'll spoiler code this. It's just a comment on what you typed, but it is spoilery, so if you'd rather see the movie unspoiled at some point, feel free to skip it. Spoiler: 10 Cloverfield Lane There was an incident in the movie where someone outside was trying to get into the shelter. If I'm remembering the timeline of the movie correctly, I *think* that was around the halfway mark. It did show the characters (and audience) that *something* was going on out there, just not necessarily *what*.