An investigation spanning Ukraine, London, New York and his home city of Bristol claims to have identified the world’s most famous anonymous street artist. CHAPTER 1: AN INITIAL CLUE HORENKA, Ukraine – In late 2022, an ambulance pulled up to a bombed-out apartment building in this village outside Kyiv. Three people emerged. One wore a gray hoodie, another a baseball cap. Both had masks covering their faces. The third was more easily identifiable: He was unmasked, and had one arm and two