Batman: Nightwalker - By Marie Lu

Before he was Batman, he was Bruce Wayne. A reckless boy willing to break the rules for a girl who may be his worst enemy.
The Nightwalkers are terrorizing Gotham City, and Bruce Wayne is next on their list. Bruce is turning eighteen and inheriting his family's fortune, not to mention the keys to Wayne Industries and all the tech gadgetry that he could ever desire. But on the way home from his birthday party, he makes an impulsive choice that leads to community service at Arkham Asylum, the infamous prison. There, he meets Madeleine Wallace, a brilliant killer with ties to the Nightwalkers. A girl who will speak only to Bruce. She is the mystery he must unravel, but is he convincing her to divulge her secrets--or is he feeding her the information she needs to bring Gotham City to its knees?
Bruce Wayne is proof that you don't need superpowers to be a super hero, but can he survive Madeleine's tense game of intrigue and deception?
"Masterful. . . . A great story for any Dark Knight fan."
--Den of Geek
Don't miss the rest of the DC Icons series! Read the books in any order you choose:
Wonder Woman: Warbringer by Leigh Bardugo

• Catwoman: Soulstealer by Sarah J. Maas
• Superman: Dawnbreaker by Matt de la Peña