Christina and Marina trained as actors at The Oxford School of Drama, graduating in 2008, and started writing together about two years ago.
Christina fancied giving comedy a go (and Greek tragedy roles a break) while Marina, who currently works in script development at Vertigo Films, has always had a flair for the giggles.
C&M are over the moon to be in the final three for the Funny Women Comedy Writing Award and look forward to exciting times ahead!
Here's what they say about their script, Filthy:
'What if you met your best mate in a prison cell? MILLIE and CLAIRE f*ck up more than most. But together they could be amazing (or a complete disaster)… '
We wish them the best of luck for Monday's final! In the meantime here they are getting ready!
To find out more about Marina and Christina follow them both on Twitter @MarinaVertigo and @CartyChristina.