Former super-villains, who have integrated a witness protection program, are killed one after the other. There can be only one explanation: a mole is infiltrated into the S.H.I.E.L.D. This is the beginning of a race against the clock for Captain America, while former allies are on the side of evil... Contains the US episodes: - Captain America (2011) 11-19 previously published in AVENGERS (V3) 5-12