In truth, Tony wasn't sure he expected anyone to use the buzzer. Raziel scaled the place. Selina came and went on her own. Now though there was someone there, pushing the buzzer.

Tony stared at the monitor for a long moment, considering. Finally he took the stairs two at a time, moving to open the door from the inside.

"Stark Towers, Tony Stark," he said, offering his hand. "You are?"