Aleister stands atop a building. His face obscured by a mask, warm summer wind making his hair and cape wave through the air of the moon lit night. "My, my, they really didn't try to make it hard for me, did they?" he says as he holds up a blue gem right into the moonlight while observing it with his sharp eyes, smiling while doing so. Just ten minutes before that he was standing in front of that building, which in fact was a museum. In only those ten minutes he had gain access to the building, bypassed the security system, found the object he desired, removed it from it's rightful place and then disappeared leaving no trace behind. Well then expression "only ten minutes" was probably wrong. The time he usually need when he was serious was less than that. But fact was, that night he didn't come there after some elaborated plan, or because the building contained an item the would find interesting. He did play with the idea to break into that certain museum and even made some (very) rough (rough on the level of being drawn on tissues) plans at home and had a few contacts ready, but that he robbed it exactly at that time was nothing but an impulse caused by boredom. He didn't even visit his mansion, he always had a reserve outfit of Phantom at the theater ready and as soon as he finished some late night work he got the idea to visit the museum. In those few minutes he was inside he wasn't really searching for something specific, but rather was on a "sight-seeing tour" through the museum, trying to find something he likes. In the end, it was the blue gem that is currently in his hands, that became the object he added to his already impressive collection. He didn't even use magic to do it, the security was so laughable that it seemed like the director of the museum simply put his hope into the fact that someone wouldn't target his museum.
With both satisfaction because of the newly acquired treasure, but also a with a hint of disappointment about the lousy challenge that was put before him, he prepared to take his leave. Because of the enjoyable climate and the full moon above him, which made the entire night very enjoyable, he decides to walk home rather than just teleporting to the desired location. Who knows, he might even encounter something interesting on his way back.