FBI Agents and a Mysterious Neighbor

The bass thumped through the floor of the "Up&Down" bar, a welcome distraction from the usual intensity of our jobs. Grace was practically dancing on the table, a half-empty glass in her hand, and Carter wasn't far behind. We were celebrating, blowing off steam after a particularly draining week.
"Come on, Ella, loosen up!" Grace shouted over the music, her eyes sparkling.
I laughed, taking a sip of my beer. "I am loose, this is my loose!"
Just then, Carter's phone rang, the bright screen a stark contrast to the dim lighting of the bar. His expression shifted from relaxed amusement to a worried frown as he answered. Our boss, Danny, was on the other end, his voice a loud, angry rumble even from here.
As Carter spoke, Grace and I exchanged amused glances, then our attention drifted back to the crowd. So many people, so many stories... and then Carter hung up, his face pale.
"What's wrong?" I asked, the buzz of the alcohol fading slightly.
"Somebody broke into the secret room," he said, running a hand through his hair. "And Danny wants us to check it out. He's out of town."
