(dramatic music) - A letter for you, Miss Austen, from Kintbury.

- "Miss Austen" is based on the true story of Cassandra Austen, Jane Austen's older sister, who wanted to protect her sister Jane's legacy.

- She founds out that some of her sister's correspondence is in her friend's house.

- It's personal correspondence, things that weren't for other people's eyes.

- Letters that essentially are going to shine a negative light on her sister's memory.

- [Jane] My dear Eliza, the sheer madness of it drives me to distraction.

- In our story, Cassandra goes about collecting up some of the correspondence, and she reads these letters and thinks, nobody else can have these.

- Did you find any letters from Jane?

- Not a single one.

- It's based on a novel by Gill Hornby.

The book and the adaptation pursue what might have been in those letters, and in so doing, kind of unravels this very crucial relationship, without which Jane would never have written her novels.

- The story takes part in two different timeframes.

- We delve into the memories that Cassandra and Jane had together as young sisters.

- We will survive this, Jane.

Promise.

- And then we jump forward to 1830.

We sort of go behind the scenes and explore the real influences behind Jane's novels.

- We're familiar with her work, but to see how and why she brought these characters into creation is fascinating.

- It's so much about those very deep, nuanced female friendships.

- It's a incredibly beautiful story.

- [Keeley] It has romance.

It has thwarted romance.

- Lovely characters.

- [Patsy] Really stunning, beautiful locations.

- It's all about sisterhood, lost love, and self-discovery.

- It is like something from a Jane Austen novel.

I think people will love it.