Agnes O’Casey – The Private Self
June 15, 2026
Culture & Music
Online Exclusive
Words:
Georgina Oller
Georgina Oller
Photography:
Pip Bourdillon
Pip Bourdillon
Few performers embody duality quite like Agnes O’Casey. Whether navigating the shadowy worlds of spies and secrets or portraying women caught between duty and desire, her characters live in the tension between what is revealed and what remains hidden. As her star ascends, we speak to O’Casey about performance, privacy, power and the allure of disappearing in plain sight.
Georgina Oller: Everyone suddenly seems obsessed with you this year – appearing in Star City, Legacy of Spies, Black Doves, and coming straight off a major West End run. Has life actually changed day to day yet, or are you still able to disappear into normality?
Agnes O’Casey: This has definitely been the best year of my career and up there for best year of my life! All I’ve ever wanted to do is get to work on great scripts with great people and I have been beyond blessed with that. Day to day I can totally disappear so I’m currently experiencing the perfect balance.
GO: You grew up around theatre, but acting can also be a difficult profession. Was there ever a moment when you nearly walked away from it? And is there a grounding point or ritual that helps keep you steady through the uncertainty of the work?
AO’C: There have been times I thought it wasn’t going to happen for me – it took me three years to get into drama school and then I was a covid grad – but I never considered quitting. No matter how bleak it got this is the only thing I can do so there was never a question in my mind. My grounding point and rituals are I cook, read and have lots of baths.
GO: Your performances often feel emotionally restrained in a very compelling way. Do you see restraint as a particularly powerful quality in women on screen?
AO’C: Oh what a great question! I think that it’s incredibly fun to play someone who is emotionally bound, that tension is enthralling. I feel like as women we all know what it is to be trying to hold it together under impossible circumstances and various infuriating expectations. I don’t think I see restraint as an innately powerful quality I just think it is a realistic part of what it is to exist as a woman. Ideally we could all loose our shit and let go of the reins much more.
GO: There’s something undeniably seductive – almost fetishistic – about spy stories: the tailoring, coded language, danger, discipline, and the way they trade in secrecy as much as suspense. What do you think we’re truly drawn to when we romanticise espionage in this way?
AO’C: Fetishistic is right I think we are all drawn to the secrecy and the illicit danger of spy stories. We all try so hard to be good, upstanding honest people and there is maybe some catharsis in watching people who have been given the permission to break as many rules as they see fit. We all put forward different faces to different people so I think there is something recognisable in watching a spy move through the world. It’s both a fantasy and a reality.
GO: Spy stories are obsessed with duality: the public versus the private, performance versus truth. Many of the women you’ve played recently seem to exist between identities. Does acting require a similar negotiation of self, and is that a tension you recognise within the profession itself?
AO’C: It’s funny that negotiation with the public verses the private when it comes to work. Because at the end of the day, on a film set, you are at your job and yet your job requires you to do some incredibly vulnerable things. Sometimes you have to say to yourself “okay, this is horrifically embarrassing but you gotta grow up cause this is your job”. Also the great thing is it’s not you, you are protected by your character. Different parts of yourself will sometimes sneak through but that’s never a conscious decision from me. The way I think about acting is that it is an imagined truth – that sounds horrifically pompous. I guess what I’m trying to say is – it’s not real and that’s comforting.

GO: You’ve described Irina as a “baddie” before, and Star City is quite special in the way it resists traditional ideas of heroes and villains. How did you approach navigating your character’s moral ambiguity?
AO’C: When I described her as a baddie I was definitely being glib! The great thing about Matt and Ben’s writing is that you get moral ambiguity in everyone. Every decision Irina makes is one that she believes is right or is in service to her own self preservation. It’s so important to not go in judging your character and if you do you have to find ways to understand them more. At first I was excited by getting to play someone with a zest for brutality, but the more I got to know her I realised she doesn’t have that at all. She wants to be safe and accepted in a world were everything is precarious.
GO: Do you think you’re naturally drawn to certain characters, or is your connection to them something you only uncover through the work itself?
AO’C: I definitely think that certain characters speak to me. That is quite an instinctual process for me though I couldn’t pin point why. Like picking a partner or making a friend!
GO: You’ve said publicly that you’d make a terrible spy because you’re far too sensitive to your surroundings – that you “have to look into a coffee shop and sense the vibe before I walk in.” Yet this year you’ve taken part in some of the biggest productions of your career. As your visibility increases, what becomes more valuable to you?
AO’C: The thing is, I love my job, and unfortunately I guess the potential for losing your anonymity comes with that. I love being anonymous. I got into this industry because acting is the biggest joy in the world to me. So I guess that has to come above any other fears. I wish one didn’t lead to the other but I’m very lucky I get to do this job and it can’t be completely perfect!
GO: I find there’s something quite intimate about returning to a character after time away from them. When you stepped back into the world of Black Doves, was Dani waiting for you, or had your understanding of her changed?
AO’C: I think that she was still there! Dani just constantly amuses me I love how petulant and pathetic she can be. It definitely the most playful I’ve felt on set cause there is something so freeing in just playing a total shit. I love that I’m saying this after waxing lyrical about not judging your characters.








