Detective Comics #570 (January 1987)
Written by Mike Barr, art by Alan Davis and Paul Neary
The Bat-books were on the cusp of a major reboot as 1987 began. Batman: Year One was on the horizon, and it revised and revamped huge swaths of continuity, especially for Catwoman. This was her final appearance before the reboot began, and after a decade in which Catwoman went straight and romanced Batman, the issue fittingly returned the character to her villainous roots. The methodology was sketchy; the Joker messed with her mind using a machine of his own maniacal devising. But she was happy to be back on the wrong side of law, and rejected Batman’s attempt to turn her back.