The dynamic supernatural duo of Seer Jordan Amador and her husband the archangel Michael is back in the sequel to the bestselling urban fantasy novel, The Black Parade, trying to solve a deadly case. Someone is methodically hunting down and murdering Seers one by one. After six months with no leads on the killer, Jordan and Michael are forced to work with their worst enemy—the archdemon Belial: a self-professed Prince of Hell who is dead set on stealing Jordan for himself. However, with the archdemon's help, they pick up on the trail of the serial killer and plan to stop him no matter what the cost.

When the shocking truth behind the murderer's identity is revealed, Jordan begins asking herself if she is still fighting for the good guys or has she become one of the monsters she is desperately trying to stop?

She Who Fights Monsters is the second novel and third book in the Black Parade series. It follows The Black Parade and The Deadly Seven: Stories from The Black Parade.