 Call the Midwife series 12 began last week and saw the arrival of a new sister to Nonnatus House, Sister Veronica played by Rebecca Jennings. In the same episode, Lucille Robinson Leonie Elliott was troubled when she heard Enoch Powells 1968 Rivers of Blood speech on the radio. It made her feel even more alone ... Call the Midwife star warns Cyril and Lucilles relationship... 