Collects Secret Avengers #12.1, #13-15 & Fear Itself: Black Widow #1. With Sin tightening her grip on the Eastern seaboard, Steve Rogers' black-ops Avengers take to the front lines of Fear Itself! War Machine, Ant-Man and Beast defend Washington D.C., the immortal Valkyrie leads a squad of mortal soldiers and Black Widow fights for the honor of Bucky Barnes.