"Nightwing, Khaji Da," Cassie said, gesturing to each in turn by way of introduction. "Khaji Da, Nightwing."

She listened as Brainy described the injuries that had been inflicted on Jaime by this alternate universe Harley Quinn, eyes going cold and fingers curling into fists that made her knuckles creak.

"I certainly don't object to that plan," she said with a nod toward Jaime/Khaji Da. "Did you see -- or sense -- anyone else? Anyone who might have been able to make that device or nerve gas?"