"Hello, people of Gotham. This is the Riddler speaking. On Halloween night, I killed your mayor because he was not who he pretended to be. But I am not done. [shows Pete Savage in a rat trap around his body with rats eating him] Here is another who will soon be losing face. I will kill again, and again, and again, until our day of judgment when the truth about our city will finally be unmasked. Goodbye!"
January 1, 1970
https://en.wikiquote.org/wiki/The_Batman_(film)