The hugely successful series starring Jenny Agutter, Pam Ferris, Helen George and Linda Bassett returns with more touching and compelling stories from the nurses and nuns of Nonnatus House. In this series Sister Monica Joan goes missing at Christmas time leaving the nuns and nurses distraught. Shelagh rushes to put together a children’s choir in time for a BBC broadcast from the church. Elsewhere Trixie, having battled through her issues with alcohol, finds a new purpose in her keep fit classes. And could friendship blossom into something more for vicar Tom Hereward and Barbara? Also includes 2015 Christmas Special.