Who Is the Mystery Daredevil Leaping Across Skyscrapers?

A mystery person was spotted high above the New York City streets, leaping from building to building. Video of the stunt was shot by Emmy-nominated cinematographer Erik Ljung. The daredevil could be seen running across one penthouse rooftop, before leaping to the next, and to one after that. Then, the man was spotted opening a window and climbing inside. Some opined that he was doing parkour. Now, the hunt is on to learn the identity of the risk-taker.