I always manage to miss these online convos/Alex being online now that I have to take my free time and use it for packing.

Since Kody isn't around for me to bother and see what he may want to do, have Taranis go see if he can find any clues on/around/through the other side of the open door and see if Taranis can tell if the person who opened the door was trying to be sneaky and get in the room or what. Doors shouldn't be able to open themselves, although it wouldn't really surprise me if it had.
If it turns out that whoever opened the door wasn't trying to be sneaky or I couldn't find anything, snoop around anyway and see if I can't find anything interesting.

If all this has already been done, then I don't know. :P