Batgirl #20

"As the temperature drops even lower, Batgirl feels the pressure to find the maniac behind the worst blizzard that Gotham has seen in years! All signs point to the city's latest villain turned hero: the Penguin. Could his efforts to help be a front for a greater crime in the making? What does his brilliant yet corrupt son, Black Sun, have to do with it? Find out in the thrilling conclusion to our wintry tale!"