New ‘Gotham’ Photo Teases Character’s Possible Change into Harley Quinn

Harley Quinn is coming to Gotham! That's according to executive producer John Stephens, who, in an interview right ahead of season 3, said, "We might see [her] in Episode 22," Now, with the end of the season quickly approaching, a new promo photo is lending more credence to a long-standing fan theory that Harley has been there the whole time.