Cloaked (Cloaked #1)

Twenty-five years ago, a genuine masked hero came out of nowhere to declare war on crime. All of America celebrated the exploits of the black-clad vigilante as he took down one lawbreaker after another... and then he disappeared. But when down-on-his-luck investigator Jake Stevens is hired to find the long-missing dark avenger, his inquiries threaten to expose the myth behind the mask.