All is quiet now if the group went out to join Duncan they saw only the last part of the White lady and woman tumbling over the side of the castle. And soon Duncan walking back to them. You can do what you wish. Right now the Dragons den is empty you could see what the tribute is. You can fight Rezmir and her entourage which you know consists of two red wizards of Thay, 4 guard drakes and a bunch of kobolds and maybe more unseen villains. 

Duncan:

”With the white dragon gone for the moment, now is the time to strike if we want to mark this happen.  But we will need help,” says Duncan.

Turning to the Giants, he asks, “How badly do you want these cultists out of your castle?  Could you subdue the guard drakes for us? The are quite useful as mounts and we would t want to hurt them if we don’t have to.”

Kat looks to the giants as well, needing to know their response to the questions asked of them before making any plans of her own.

Torman anxiously waits for Duncan and Kat, eagerly anticipating whatever may come next.

"We are only guests here of Blagothkus"  Wiglof replies and Hulda nods in agreement. "You would have to talk to Blagothkus to help you on that."

"Where is Blagothkus?" Torman asks.

"Last we saw him he went to fight the woman in white." Wiglof says.

Duncan:

”We must move quickly if we are to take advantage of this situation,” says Duncan, “But we four are not a match for Rezmirr and her full entourage without the help of the giants…And she knows that her quarters have been raided.”

”Wiglof and Hulda, do what you must to decide if you wish to help us rid your sky citadel of the cultists,” Duncan says.  To his fellows, he says, “Let us at least go to the den of the dragon while it is abandoned and see what we can find.”

Duncan prepares to race off that direction, but he waits briefly to see the others’ response.

Torman eagerly follows Duncan.

"Just as well." Kat says following after the others.

Hulda Suggests you head toward the spiral stairway she says there is a tunnel leading down.

As you head towards the stairway. You see the figures of Rezmir and her entourage coming from the gates including a large group of Cultists call Dragon-wings they're far away. 

You now stand in front of the tunnel that leads down at a sharp angle. It looks like you can climb down somehow, or slide into the unknown.

Suddenly the floor turns slippery.  The castle is haunted, of course. You slide down the tunnel for quite some distance till you come to a sudden stop! The passage is ten foot wide twenty foot high and leads on for a distance, further than your dark vision if you have it. But it does curve to the right. The wind howls here almost deafening! The blade that you took from Rezmirs room hums.... and vibrates.

"What the..." Kat says as she gets to her feet again. She frowns over in the direction of the humming sound. "Is that blade humming?" She asks. With a glance around she then tries to ascertain if there is only the one direction they can go. If so she would creep along in that direction, atempting to see where it leads.

Its a good distance, the slide was spiraling like a winter Olympic lounge course mixed with a water slide.  Roll stealth. But I suggest a little role play with the others first.

Torman gets to his feet and brushes himself off. "Well, that was fun," he says with a half-hearted laugh. "So, where are we now? And why is that sword humming?"

Duncan:

With the overwhelming force approaching, Duncan chooses the rapid path down the sloped passageway.  Recovering at the bottom, he looks at Kat and Torman, then at the blade he carries, saying hopefully, "You're right.  That is interesting.  Maybe it vibrates when treasure is near? I don't suppose anyone else could make better use of it than I?"

"A blade that big is out of my wheelhouse." Kat says with a shrug. "Maybe it hums when danger, or a specific type of chreature, are about..." She narrows her eyes as she glances to the tunnel again. "Shall I scout ahead, or do you wish to stay closer together as we continue along?"

You hear the sound of someone sliding towards you this person doesn't look like friction is their friend and won't stop soon. You are surprised. The familiar face of Wagner comes into view if there is something ahead, he will alert them. Will someone catch him? Roll Athletics easy DC.

Duncan:

Reacting quickly (thanks to his Flail of Warning), Duncan reaches out to try and catch the sliding person!

Athletics:  21

(Nice) You catch the bard.(Rhetorical Do you keep him?)