When Polly Stenham started writing her first play at just 19 years of age, she couldn't have imagined the success it was going to have.

That Face premiered at the Royal Court Theatre in London in 2007 to rave reviews and earned her the 2008 Evening Standard award for most promising playwright.

It was named at number nine in The Times top 20 plays of the decade and is now being turned into a screenplay having enjoyed a brief run in the West End.

The latest drama group to take on the play, which revolves around a dysfunctional family led by an alcoholic mother, is Mustardseed Theatre Company at TARA Studio next week.

"It is about the family unit and the fragility there," explains co-director Clare Martin.

"Martha, the mother, is the instigator for all that happens.

"Henry, her son, is taking care of her as she is an alcoholic and Mia, the daughter, steals Valium from her and ends up drugging one of her school friends.

"Everything is falling apart for them.

"It is quite dark and is going to make the audience squirm in some places.

"There is an odd relationship between Henry and Martha that borders on incest.

"Their relationship is set in their own little world and they are in this little bubble in Henry's bedroom that no one can break through and they cannot break out of it into the real world.

"Part of the story is Henry coming out of that and realising there is a life outside of his bedroom."

Mustardseed was founded by a group of Roehampton University graduates unsure of what to do once their degrees were finished.

That Face is the company's fourth production and Martin admitted Stenham's age when writing the play was something that appealed to them.

"She only wrote it when she was 19 and still at university and that really appealed to us," she said.

"We had just come from Roehampton University and started out with a handful of us asking what to do for the rest of our lives.

"The answer was right there in front of us though.

"We wanted to write for people and to perform in front of an audience."

That Face, TARA Studio, Garratt Lane, March 23 to 27, 7.30pm, £9. Call 020 8333 4457 or visit tara-arts.com.