Mighty Avengers (2007) #4

Written by BRIAN MICHAEL BENDIS Pencils and Cover by FRANK CHO Ultron has taken over the world!! The Black Widow has taken over S.H.I.E.L.D.! The Sentry's life is changed FOREVER! And the rest of the Avengers are faced with the power of the new Iron Man unleashed!! 32 PGS./Rated A …$2.99