A sequel to the summer blockbuster "Wonder Woman" is in the works; at least, that's the word following a weird Warner Bros. flash card announcement at Comic-Con over the weekend.

The studio flashed a title card with the words "Wonder Woman II" during a "Justice League"panel, according to CBS News.

Lead actor Gal Gadot is expected to reprise her role as the crime fighting superhero, but's it's unknown whether Patty Jenkins will return to direct the sequel.

"Wonder Woman" has grossed $398 million at the North American box office since opening in early June.