Jace waited until they were moving toward the exit and the two guards had moved to either exit in the room. Guarding to no doubt make sure the dwarf did not make a run for it. They did not have to have one for the main door since there were a number of guards already gathered there.
Jace stood and moved over to the Dwarf while still invisible. Jace then grinned when he saw the Dwarf glance over at him as he walked over. So he leaned against the railing while looking at the Dwarf. Jace then turned his external volume down to a whisper. "How can you see me? Some type of special sight or something else that normal humans cannot see?"