Cryvus was the first to descend, taking the first staircase he came across. It was the shortest route to their hosts, but a tap on the shoulder from Crisis halted him before he rounded the corner and onto the first floor, the glow-lamp in his hand having given away his position to anyone who may be lurking in wait.
Cryvus:
Mikolas ran on to the next stairwell, one that would bring him down on the other side of the walkway that ran above and between the entrance hall and the ballroom. He paused at his own corner, Masha still in tow. He didn't see anything ahead of him though he heard some scuffling coming from the left hand side of the intersection.
(Here's a map of your positions. Darker flooring indicates an the first floor (which you're currently standing on). Lighter grey floors indicate a level below you; the entrance hall and the ballroom respectively. Blue lines indicate a railing as opposed to a wall, orange lines indicate doors on your level and red lines represent lines on the level beneath you. You'll notice that the immediate area surrounding Cryvus is illuminated while the rest is shrouded in darkness. Anyone shooting at a target in darkness will take penalties to hit unless they've got a means of seeing in the dark. Whatever enemies lurk in it will remain hidden until someone pokes their head out to take a look or their location is pinpointed in some other fashion. Finally, Gunner and Mithras will arrive in 2 turns time should they follow Cryvus down or 3 turns time should they follow Mikolas. They may also run to the East Wing and head down to either the first or ground floor via that means, both of which will take around 6 turns.)