Signed by Brandon Sanderson!
The Reckoners, Book 1
A light called Calamity burst into the sky ten years ago. It gave people extraordinary powers and the public called them Epics. Epics are no friend of man. Now in Chicago, an Epic called Steelheart rules without mercy and without weakness. Nobody fights him but the Reckoners.
The Reckoners are ordinary humans who study Epics to discover their weaknesses and then assassinate them. David wants in. Since his father was killed by Steelheart, David has spent years studying and planning to bring him down. And he has something the Reckoners need. Not an object, but an experience.
He has seen Steelheart bleed.