This was originally written and produced as the ninth episode of season 5, but held back when the episode order was expanded from 10 to 12. The actual ninth episode is Legend of the Dark Knight: The Trial of Jim Gordon (2019)
The episode features the final appearance of Camren Bicondova as Selina Kyle. Lili Simmons takes over the role for the final episode.
Lucius said the "failed cloaking device" that attracts bats was from the "Nightwing Project." In the comics, Nightwing is the alter-ego Dick Grayson took on after he matured and outgrew being the first Robin.
The title of this episode references the line that was said by Nyssa when Angel Vallelunga calls to tell her about the Green Zone destruction that was supposed to happen.
During the scene where Selina and Bruce are sitting on the stairs at the GCPD towards the end of the episode when Bruce is blaming himself for the recent events, the opening notes of Danny Elfman's theme from Batman (1989) can be heard.