Batman: The Mystery of the Batwoman
I just finished watching this movie, it was a bit better than I was expecting. I would say that if you like Batman, you should watch it. Also, this movie takes place at the end of Batman Gothem Knights (aka The New Adventures of Batman) which was the one that was on Kid's WB along with Superman. Why I bring this up, is because this happened right before the Justice Leauge joined together, Tim Drake left to start the Teen Titans, and Barbra Gorden left for college. The where abouts of Nightwing at this time is unknown.