We moved into an apartment in an old townhouse, so a certain amount of noise is to be expected.  We have creaky floors, thin walls, and an unexpectedly noisy central air system.  It makes some super-weird sounds every time it comes on.  After much thought and hours of study, I have narrowed down the source of the noises to one of two things:

  1. Fiends from hell are straining against their chains, struggling with everything they have to come through the vents and drag us, body and soul, down to the fiery depths.
  2. Pterodactyls have gotten stuck in the air ducts.  They’re growing hoarse, but we can still hear their creaky roaring.  They’re coming.  If they can fit through the vents.

I’m relying on you to avenge us.