A film student named Riley accidentally caught some shots of Bruce Wayne fighting Hush atop a nearby building. He compared it to some amateur footage of Batman and realized they were the same. He set his friend up to kill a security guard so they could get another tape. The friend was shot, too.
Riley gave a tape to Wayne. The boy wanted "millions." He refused to take favors (jobs, etc.) and demanded cash. Both he and Alfred (who was the middle man) were shot.