Katharine Isabelle: It was emailed to me with a brief note saying ‘Two hot identical twin sisters who are directors have written this’ and I thought [sarcastic] ‘Oh yeah this is going to be really good’.

Then I ended up reading the whole thing, 180 pages I think, on my Blackberry twice!

And then put it down and went ‘What the shit did I just read?’

I sent it to my dad who has been a film guy forever, to make sure that I wasn’t completely insane.

It just struck me on an instinctual level, I really connected with it, the character was so interesting and original and multi-dimensional and something I don’t get to see very often.

And then I met up with these two twits and that was the end of that.

The beginning of the end.

Sylvia Soska: We wrote the part for Katie, so we were putting a lot of faith in her, if we’d have hated each other I probably would have just cried.

But then she came in, and we were out until about 5am in the morning passionately talking about body modification, radical feminism and the recession, we got thrown out of three different places.

God knows what they thought we were talking about.

I remember in a sushi place she said something loud about nipples being removed and we were like [goes quiet] then no-one sat near us anymore. I thought, 'This is going to work out fine, we’re going to get along very well.'

Jen Soska: That’s the most stupid thing for a director to do, we never write for an actor because you never know when you meet them, if you’ll get along, if they are the person you’re hoping they are from the interpretations you take from watching their work and you don’t know if they’ll be available, we put so much emphasis into this one [points to Katharine]