Oh, had Castiel's patience ended? Izaya could understand wanting to get started—to that end, Castiel had even moved over to test whether the other doors were indeed locked—but there was no harm in a few little questions in the meantime. It wasn't as though chatting and working were mutually exclusive; if the girl intended on sticking around, they could easily talk while Castiel tried his hand at the lock.

Nevertheless, he followed Castiel to the door, glancing back at the woman as she answered his question.

"If that door is already unlocked, you could have said so in the first place," Izaya commented with a thin smile. He wanted to ask about the 'miasma', but... For now, he would get Castiel started.

He finally held out one of the two paperclips to Castiel: the one with broader bend. "Insert this one first, at the bottom," he instructed, pointing his flashlight towards the lock so that Castiel would have a bit of light. It wasn't an ideal setting, but it would have to do. "You need turn it in the direction of the lock. Keep pressure on it the entire time you're working."

Izaya then held out the other paperclip. "This one is your pick. For now, just insert it and feel the pins in the lock." If it hadn't been for the girl's interruption, Izaya had intended to explain the workings of a lock to Castiel... but he could come back to it later. For now, he wanted to let Castiel feel like he was beginning to accomplish something.