Heidi Thomas has revealed all about our favourite Sunday evening drama

Call The Midwife is back on our screens tonight (Sunday) at 8pm – which means fans of the show are already preparing themselves for the dramatic comeback of our favourite Nonnatus House nurses.

As the seventh series takes us back to Poplar in East London, viewers will watch Nurse Crane help a dying woman and her husband whose home is about to be demolished – and we’re sure there’s not going to be a dry eye in the house.

And ahead of the excitement, now the show’s creator Heidi Thomas has revealed new details about the ‘special’ first episode and why it’s so important to her.

“We so often have stories focused on new life and birth,” she says in a short clip posted on the official BBC Twitter page. “And yet at the other end of the nursing spectrum there’s stories about life ending and death and I wanted to start this series along those lines.”

Revealing the back bone of the episode, she continues: “It’s a simple story line about an elderly Jewish couple who’ve lived in Poplar for more than 30 years and Ruth, the mother of the family is dying of cancer.”

Heidi then goes on to reveal how the BBC tried to involve the Jewish community in the episode, continuing: “The Jewish community actually appear on screen in a beautiful scene involving the Jewish mourning ritual, and they were delighted we’d featured their community”.

She then adds: “It’s also a story about demolition, it’s about the tearing down of the old East End and it felt very important to me that we featured that at the beginning of the series.

“So much of episode one is about change and moving away, families breaking down and the Gellens are at the heart of that”.

Get the tissues ready everyone, because you’re going to need them!

Meet Lucille - New Call the Midwife star Leonie Elliott: I want to do justice to the story of the real-life Commonwealth nurses who came to Britain

Meanwhile, young Jamaican nurse Lucille Anderson (played by Leonie Elliott) is set to make her Call the Midwife debut on Sunday as the former librarian arrives in episode one.

And while snow delays her journey to Poplar, she’s soon assisting Trixie with a breech birth.

“It so exciting to join because I’m a fan,” revealed Leonie, 29. “Lucille is an amazing character. She’s brave and always wants to do her best for the expectant mothers.”

“A lot of women like Lucille emigrated to Britain then and they’re unsung heroes,” says Leonie. “I wanted to do their story justice because I know they’ll be watching.”

Cancel all your Sunday night plans, because this is a must-watch!