The first episode of Series 3 will air at 8pm on Sunday 19 January on BBC One and, following the closure of the former Nonnatus House, the nuns and midwives finally move into their new premises. The building is not the only new sight as Sister Winifred arrives from the Mother House.

Jenny is concerned about new mother Merle’s mental state and the welfare of her newborn who isn’t feeding properly. Dr Turner is concerned that it could be something more serious. Sister Monica Joan’s increasingly eccentric behaviour has been causing concern, but she is the one who finally solves this perplexing medical mystery.

Watch the Series 3 trailer…

> Buy the Series 1-2 boxset on Amazon.

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