Swamped

It probably causes the fewest complications if you give the true answer and deal with whatever comes next when it comes.

"No. I was born in this town and grew up in it," you reply. "And I've never been to Kandria."

The doctor hesitates a bit before he pulls his hand out, and shows you a letter.

Agent will be in early fifties. Will use the name 'John Long'. To confirm, ask if Kandrian. Agent will reply with a line from the Pledge.

"I found this among a patient's belongings," he explains. "I don't know what this Pledge is, I'm guessing it makes sense to whoever it's meant for. But I'd imagine it's pretty recognizable if they think it makes good identification."

"And it might not even have anything to do with Kandria, if that's just a code phrase," you muse. "So you were worried I was tied up in whatever this is, or perhaps hoping you might be able to get answers from me?"

"It was nagging at me. You're fifty, you're giving the right name, and you were found under strange circumstances. I wanted to clear it up before talking about the other matters."

Ah. Yes, you were a bit worried about those other matters, but not so much in comparison to worrying he might be involved in espionage and looking to kill you for a wrong answer. But he seems to just be someone unfortunately caught in the middle of something bigger.

Seems to be. There's a chance the note was meant for him but it's vague enough he thought it safe to show you in order to convince you he didn't know anything.

"Well, I'll just repeat that I'm a wizard," you say. He's probably convinced himself that's how you knew the code, so you may as well let him continue to think that.

"Good. I remember that much correctly," he sighs. "I don't suppose you can use your magic to help track down whoever that was in the office?"

"It's difficult for me to use magic right now," you explain. You don't really want to go into the details, so you opt to move the conversation along before he can ask. "But I do have a thought. You probably didn't notice, but when I tapped out the code, the intruder looked towards the door first. Not where the tapping was actually coming from."

The doctor frowns.

"You're saying they knew the code, too?"

"That would be my guess. Any thoughts as to who it might be?"

"We did hire a new clerk," he mutters. "Doesn't quite fit, though - this was his first day, and we don't usually go over the code with hires that new. Plus he probably wouldn't be used to the code yet, so that sort of instinctive reaction doesn't seem likely."

Good. You really didn't want this to turn into interrogating yourself.

"Who else on staff is here this late at night?"

"At this particular moment?" He thinks for a minute. "Well, nobody's supposed to be. We have an hour of downtime between nurse shifts, because one set has to be somewhere at quarter to midnight and the other set can't get here until quarter to one. Oh, wait, there's a night janitor, but she doesn't need the codes, and usually stays away from the patients. Unless one of them makes a big enough mess."

"What about former staff?"

"Hmm," the doctor muses. "Most of the time when our workers leave, it's because they're moving out of town. Oh, wait... just remembered someone who didn't."