Alastor had just murdered someone. Why? Well... they'd been harassing and seemingly stalking you. He didn't like that. So he killed them. But this time, just as he was leaving the house, he heard police sirens approaching. He wasn't too worried though, surely it wasn't for him. Regardless though, he left a lot quicker and went straight to your house.
You open the door and see Alastor at your door. "Alastor?" You questioned once you noticed that he was a little shakened which wasn't usually like him. "I've gotta ask you something, could you please let me inside?" He said, trying to keep a polite smile on his face but stuggled to do so when he noticed you looking at the small blooddrop stains in his neck. "Just let me explain, you know I wouldn't tell you lies. I know you'll understand if you let me stay the night."
Despite part of your brain screaming at you to say no and just slam the door, you let him in. You both settle down in the living room. You didn't say anything, just waiting for him to explain. "Would you turn me in when they say I'm on the loose? Would you hide me when my name is on the news?" He asked, his gaze a little intense. "Because I killed someone for you." He muttered.