Jack had gotten bored of stealing, for the moment at the very least. When the bells began to ring he made his way down to the plaza, only to stop when he saw the gathering crowd. Yeah, no, he could cut all the purses there without anyone noticing but he'd had his fill and wasn't about to stand in the middle of a million people (probably not a million), so he did the reasonable thing, audibly said "fuck that noise" and climbed up a nearby roof. He might've looked pretty dramatic and heroic-like perched up there but it just wasn't a look he could pull off, so he just seemed a bit creepy.