Agent Carter will star Hayley Atwell as Peggy Carter and sees Carter become a secret agent as Captain America lies in the ice. It's possible the Agent Carter series might be used in-between the mid-season break of Marvel's Agents Of S.H.I.E.L.D.
Agent Carter is described as follows:
It’s 1946, and peace has dealt Peggy Carter a serious blow as she finds herself marginalized when the men return home from fighting abroad. Working for the covert SSR (Strategic Scientific Reserve), Peggy must balance doing administrative work and going on secret missions for Howard Stark, all while trying to navigate life as a single woman in America, in the wake of losing the love of her life – Steve Rogers.