In February 2015, Marvel revealed that main cast members Hayley Atwell, James D'Arcy, Chad Michael Murray, Enver Gjokaj, and Shea Whigham would star as Peggy Carter, Edwin Jarvis, Jack Thompson, Daniel Sousa, and Roger Dooley, respectively [REF].
The episode explores the origins of the Hydra-led Winter Soldier program and brainwashing from Captain America: The Winter Soldier and Agents of S.H.I.E.L.D., as seen by the end tag when Zola approaches Faustus about mind control [REF].