Sarah is voiced by Nicola Walker, with the project making for a Spooks reunion with Armitage, after the pair starred in that BBC show as Ruth Evershed and Lucas North.
Armitage spoke about his new audiobook exclusively with RadioTimes.com, and it turns out that the pair's Spooks played an even bigger role in Walker's casting than it might have originally seemed.
Armitage said: "It's interesting, because there were quite a few names being thrown around. And Audible were so brilliant to me, they said 'you can choose your reader'. But I also felt like, and I feel this about anything that I'm developing, I have to slightly step back from it because otherwise you just end up hiring your friends. And I wanted the best person for the role.
"But when her name came up, it was literally in the same week that I had written a scene which in retrospect was a subliminal recall of a scene I've actually played with Nicola in Spooks where she's tied up and drugged at the end of Lucas North’s story.
"And when I saw Nicola’s name on the page, I was like 'that's serendipity', because I'd literally just had her face in my head, accidentally. So I thought she was going to be perfect. And so I said 'I'd be happy with this selection', and then it just so happened that it was Nicola so I was really thrilled.
"She's such an actor of gravity, I thought she'll be perfect for this role and she will make it her own. So I felt very honoured that she said yes."
By entering your details, you are agreeing to our terms and conditions and privacy policy. You can unsubscribe at any time.
Armitage is also set to star in an upcoming Netflix series Damage, which also features Charlie Murphy and Indira Varma and is based on the 1991 novella of the same name from Josephine Hart.
Geneva will be available exclusively on Audible in November 2022. www.audible.co.uk. Looking for something to watch? Check out our TV Guide to see what's on tonight.
The latest issue of Radio Times magazine is on sale now – subscribe now and get the next 12 issues for only £1. For more from the biggest stars in TV, listen to the Radio Times View From My Sofa podcast.
