When does Marvel's Agent Carter return?

The series is based on the Marvel Comics character Peggy Carter. It is set in the Marvel Cinematic Universe and shares continuity with the franchise's films and other television series. Hayley Atwell reprises her role of Peggy Carter from the film series and One-Shot. James D'Arcy, Chad Michael Murray, Enver Gjokaj and Shea Whigham also star in the series. The first season, consisting of eight episodes, aired from January 6 to February 24, 2015. The second and third season aired during mid-season breaks of Agents of S.H.I.E.L.D. Despite a positive critical response, viewership fell and ABC cancelled the series in May 2016.
The first season takes place in 1946, with Peggy Carter working for the Strategic Scientific Reserve in New York City. Carter is assisted by Stark's butler, Edwin Jarvis, to find those responsible and dispose of the weapons. In the second season, Carter moves to Los Angeles to deal with the threats of the new Atomic Age by the Secret Empire.