DC Comics Universe and Detective Comics #1003 Spoilers follows.
A Batman Legacy Character Is Unmasked As…
… The Arkham Knight?!
Arkham Knight unmasks herself, but Robin doesn’t recognize her…
…and she surprisingly lets him go?!
Robin then finds a creative…
…to signal the Batman.
The dynamic duo head back to their HQ…
…where Damian’s impressive sketching skills are used to draw what Arkham Knight looks like. She is very yong, a late teen or twenty year old girl who is not in the respective law enforcement databases.
The book ends with the revelation that…
…the Arkham Knight is Astrid Arkham, a new legacy character, who is the daughter of Dr. Jeremiah Arkham!
