|Stan Lee with James D’Arcy, Hayley Atwell and Dominic Cooper|
And here is the official synopsis for the fourth episode:
In “The Blitzkrieg Button” (airing Jan. 27), Peggy may be in more trouble than usual when fugitive Howard Stark suddenly returns for mysterious reasons. Meanwhile, Chief Dooley chases — all the way to Europe — a new clue that threatens to destroy Peggy’s future at the SSR.
Source: TV Line.