Vasan plays buttoned-up and straight-faced police officer Gladys, who has to deal with the sexism and misogyny of her male colleagues while also attempting to solve a case that’s taken over the entire community. “There’s a rebellious spirit within her, and there’s more to her than first meets the eye. She really comes into her own as the story goes on, and I loved being a part of her journey.”

Gladys may not intend to do it, but she’s a character that has brilliant comedic timing while being utterly and completely deadpan. “Compared to the other characters, Gladys is unintentionally funny in her earnestness and awkwardness and definitely doesn’t consider herself to be a fun person at all,” shares Vasan. “It’s what I loved about playing her.”

One of the reasons why the three leading characters of this film all work so well together is because they all bring a different style of humour to the story. “I found it very hard to keep a straight face opposite Jessie and Olivia,” adds the We Are Lady Parts actor.

Wicked Little Letters may focus on a hard-to-believe case from decades ago, but underneath all the shouting and swearing, it’s also a beautiful story of community spirit and female friendship.

“I loved how much it centres the women in the story. All the characters you see have a life of their own and I don’t think we see enough of those stories where it’s just women having a fun and silly time, with a dash of rebellion.”

Rounding out the cast is Joanna Scanlan (The Thick Of It, After Love), Timothy Spall (Harry Potter), Hugh Skinner (Fleabag), Malachi Kirby (Small Axe), Lolly Adefope (Ghosts), Bridget Jones’s Diary (Gemma Jones) and Alisha Weir, star of Matilda The Musical.

Wicked Little Letters will be released in UK and Irish cinemas on Friday 23 February.

“Naughty, surprising and fun”: why Wicked Little Letters is your next must-watch film