ZERO HOUR comes crashing down on the Dark Knight with a vengeance when Batgirl reappears in Gotham City, years after Barbara Gordon was crippled by the Joker. Suddenly Batman's own past is in doubt...and the Dark Knight must solve the mystery even as he races to save Commissioner Gordon's life. Written by Doug Moench, with art by Mike Manley and Joe Rubinstein. Cover by Manley. Cover price $1.50.