DC Comics has announced Whistle: A New Gotham City Hero:

Sixteen-year-old Willow Zimmerman has something to say. When she’s not on the streets protesting City Hall’s neglect of her run-down Gotham neighborhood, she’s working nights at the local dog shelter. But as much as she does for the world around her, she’s struggling at home taking care of her sick mother. She’s got no time for boys (though there’s one she really likes), and no means to adopt the amazingly loyal stray Great Dane, Lebowitz, who follows her around.

Without health insurance and money running out, a desperate Willow reconnects with estranged family friend E. Nigma — ex-addict, party promoter and real estate tycoon. Nigma opens the door to an easier life, offering Willow a new job hosting his glamorous private poker nights with Gotham City’s elite. Now, Willow is able to afford critical medical treatments for her mother. Plus, the job gives her a taste of the high life she’s never had.

Whistle will be available digitally and at participating bookstores on Tuesday, September 7.