OOC:
Updated my previous post as mentioned. There is not much but please read it again before continuing.
Hiro. As all the group enters the new room safely, so do you but you glimpse at the previous room just before entering the new one completely. You realize that the dead man is no longer there. The room is completely empty, and just as you realized these the door shuts down with a loud thud. When you lay your fingers on it, you again get the feeling when you first done it, like the door displays a resistance under your hands, an uncompromisable feeling.
After the door shut down and you've all entered the room, without having time to process what was that, creatures start moving like somebody has unpaused them. They show signs of realization regarding your presence in the room and one doesn't need to be an academic to figure out the surprise on the woman's face or the surprise in their body language in general. Without having chance to speak to them (or them speaking to you) they vanish, without a trace, just erased from existence in front of your eyes, leaving nothing behind, like they were never there in the first place.
Mysterious events follow one by one, this time you hear the red door on the other side of the room opening, revealing another, much larger looking room from where you stand. It seems to contain lots of things but none of you can see it properly from your position.