Call the Midwife is a BBC period drama series about a group of nurse midwives working in the East End of London in the late 1950s and early 1960s. In the third season of Call the Midwife, it takes viewers to 1959, the eve of the Swinging Sixties. The winds of change are sweeping through the country and the residents of Nonnatus House face some momentous changes of their own.