Great cities trilogy

"Every great city has a soul. Some are ancient as myths, and others are as new and destructive as children. New York? She's got six. When a young man crosses the bridge into New York City, something changes. He doesn't remember who he is, where he's from, or even his own name. But he can feel the pulse of the city, can see its history, can access its magic. And he's not the only one. All across the boroughs, strange things are happening. Something...