The fireball flies true, and strikes the kobold square in the the chest.  They go down without a further fight

Meilanann makes a threatening gesture at the remaining kobold. "What's going on? What's behind that door?"

The kobold looks at you frightenedly, but seems to roughly understand you.  (I’m going to wait because it’s not their initiative yet)

Ekane moves back, away from from the door and the other kobold, and moves to slip back into the shadows near the doorway.

(Action: Hide - stealth: 8)

Sylvalur releases the Kobold in front of the door and steps to the side of the door, he hides and readies an attack if a beast comes out.

The kobold stands, and slowly moves to the door.  He opens the small hatch and motions for you to look through it, as the door gets slammmed into from the other side and shudders.  ‘Door’, he begins slowly in common, ’stay... shut’ it then stands back so you can look through, also laying down its weapon.  Inside you don’t see much.  The room isn’t lit by anything, but you what you can see is disturbing.  The floor is smeared with blood and small pieces of flesh.  Further back, you see an huge looming figure, and its deep red eyes staring back at you.  It just stands there, doesn’t move or make a noise.

Dorceran looks at the Kobolds for lesions and says to Sylvalur:

”What is it? What do you see?”

Sylvalur 

"The room is dark, the floor is smeared with blood and small pieces of flesh. There is a huge looming creature, and its deep red eyes, doesn’t move or make a noise."

He turns to the last kobold. "What?" He points at door.

"Shall I open it?"

As you turn around, the figure crashes into the door.  Again, the door bends, but stays closed.  It screams a massive, unearthly scream.  You can’t tell if it’s infuriated or desperate.  Looking back, you see its face now, pressed against the metal.  It looks almost like another kobold, but it’s far too big to be one.  Also, it somehow seems something else is off, but you can’t tell what.  It’s breathing heavily, though seems to calm down as you look back at it.

((Patient zero?))

Meilanann picks up one of the darts and shows it to the kobold and then mimes throwing the dart at the locked-away creature. "What is this? Why were you hitting it with them?"

Again, the kobold looks frightened.  However, this time, it doesn’t speak.  It turns around, and sprints back the way you came.  (This does allow an opportunity attack from Meilannann)

Sylvalur 

"Not going to lie, but this think looks like a monster kobold. I think it is likely the cause or at least infected "

He shrugs as he looks  around. "Shall we open it and find out?"

Alax steps over from where they were watching the combat. “I see no point in not opening the door, might as well rid the world of another host.”

Sylvalur 

"Be ready then" he opens the door (picking if needed 22)

Meilanann watches the kobold flee and then turns toward the others, looking disgusted. "He was a helpful chap." He pockets one of the darts and then prepares to attack whatever comes out of the door (and by prepares, I mean he moves as far away as he can from the door as long as he isn't more than 60 feet away).

There are three latches.  You open them all with ease - that is, if you had the time to.  On the second latch, the door is slammed into by the monstrosity.  The hinge flies off, and the heavy iron door hits the ground.  This is a true monster, you now see.  It has thick scales, and a huge maw.  It’s so large it stands over you  all, and even seems to have small vestigial wings, almost.  It roars as it sees the door on the ground...and of course, it has abscesses of the Dragon’s Fog.  

Roll initiative

Initiative:11

Sylvalur 

Init 14

(Is Ekane effectively hidden from the monstrosity? While she rolled poorly on her stealth check, I don't think the monstrosity could have seen through the door.)

(Initiative: 14)