Luckily for Marion, he left very little to go off of. He was transformed during the event, and had enchanted somthing in the main hall with the Door of Fear spell, preventing witnesses. Fortunately, it could be disabled remotely, so he doesn't have to worry about that. However, something he DOES know might give him away, is that, no matter the form he takes, if it has a horn, it's going to be his own. And there was one witness, who might account for his prescence; a little girl across the street. Fortunately for her, he doesn't know this. Just like her, then, to go report what happened. In the report, is a description of a horn: curved, smooth, black, and fading to scarlet at the tip. Also, a description of eyes: scarlet irises, green scelera, purple mist radiating from the outer corners, pupils being black slits. A mouth: full of sharp teeth. Otherwise, a thing of shadows. The murder appears to be shock; a heart attack in an elderly pony.