Bruce was always convinced that Damian was his only biological child. It couldn't be that there was someone else. Bruce was careful, and even in his casual hookups he always monitored the process, always making sure that nothing accidental would happen. Talia was his only weakness at the time, he allowed himself to relax, didn't keep an eye on his drink and... that's it.
But with others? He was paying attention. At least, he thought so.
Yesterday, he received an anonymous message - or rather, Batman received. "I demand a meeting. Meet me at the docks. I know who you are, Bruce Wayne." Bruce tensed as he read the message. Someone knew his secret. Someone had all the knowledge they needed to blackmail him, apparently. Well... he wasn't that simple.
He gathered everyone - Damian, Dick, Tim, and Jason. If this person thought he would come alone, he was sorely mistaken. If this person had information about his identity, then they were probably quite powerful.
When it was time for the meeting, Bruce walked slowly through the dark corridors between the loading crates. Damian walked next to him, and Tim, Dick and Jason were in ambush.
Finally, a shadow slipped out of the darkness. A hood hid her head, but her face was clearly visible. It was a woman... where had Bruce seen that face?
Bruce squinted under the cowl and spoke: "Who are you and how do you know my identity?"
The woman helped with her head. "It doesn't matter. You may not remember me, but I was one of your, what must have been, numerous hookups." The woman pulled down her hood, frowning.