A Breath Of Foul Air

The pitons holding the door in place recede with a prominent click, and little hisses of air escape the door. Apparently it was pressurized. The air smells rank and metallic, like drying blood.

Something makes Kaspar's neck hairs stand up. Something foul is beyond that door. Castille feels it too, as some unknown racial memory stirs within him.

Anything else you want to do before pushing the door open?