Cliodhna O'Sullivan

Author Her Hidden Fire (March 26) & Her Rising Flame (out 3rd November 2026) (Penguin)
USA Today & UK bestseller, Amazon Editors Best Books of 2026, GMA pick.

[Cliodhna O'Sullivan @CliodhnaOS]

So yes, I do know there's many a slip between an announcement and something actually appearing on screen, but I'm still so delighted the news is out now & am crossing all fingers and toes this project will one day make it to a screen near you 🫶 📣🎉📽️🎉

[FairyLoot @FairyLoot]

We are so excited to present to you… the ‘Her Rising Flame’ Exclusive Edition, brought to you in collaboration with @CliodhnaOS and @PenguinTeen!

[Cliodhna O'Sullivan @CliodhnaOS]

🚨Waterstones 25% off pre-order promotion ends tomorrow Friday 24th, for any books you might be interested in (trust me, future you will thank you when it's cold, your bank account's feeling the autumn squeeze and then a lovely, snazzy new book comes popping through the door...)

[Cliodhna O'Sullivan @CliodhnaOS]

I'm guessing people are miles away from their laptops enjoying the sunshine, but just popping on to say (a) Her Hidden Fire has been picked as an Amazon's Best Books of 2026 so far (yay!) and (b) there's a 25% off pre-order sale on Book 2, Her Rising Flame, at Barnes & Noble🫶

[Cliodhna O'Sullivan @CliodhnaOS]

Just hopping on to say my debut fantasy, Her Hidden Fire, is a Kindle Daily Deal today, so if you're looking to load up the Kindle with holiday reading...it was a GMA Book Club pick, an Indie Next pick by the ABA, a # 1 international bestseller and not a bad auld read

[Cliodhna O'Sullivan @CliodhnaOS]

@thehoneypop Thank you so much for this really thoughtful review! 🫶��️

[The Honey POP 🐝 @thehoneypop]

Her Hidden Fire by @CliodhnaOS will keep you on the edge of your seat, and we already can't wait for the next installment! 🙌

https://t.co/4IHumOouX0

[Cliodhna O'Sullivan @CliodhnaOS]

Happy New Year, Happy new book!
It's the 3rd of January - exactly 2 months until Her Hidden Fire is published by Penguin Random House on 3rd March 2026🥳🎉
Called a 'stunning debut' by the Bookseller and a top 10 Indies Introduce pick by the American Booksellers Association ❤️🙏

[Cliodhna O'Sullivan @CliodhnaOS]

@WomackPhilip @WiltonSquare Congratulations Philip, so delighted to see this wonderful book finding a new home

[Cliodhna O'Sullivan @CliodhnaOS]

@NicolaPierce3 Nicola, I'm so very sorry for your terrible loss. Sending you every prayer for the strength to get through this.

[Cliodhna O'Sullivan @CliodhnaOS]

@david_mitchell I mean, look at the state of the spine on this (jumps up & down on it a bit more), couldn't possibly inflict another read on the poor thing. Will just have to get the lovely shiny new one. Sigh. Honestly, more an essential stock refresh than anything, gives me no pleasure at all.

[Cliodhna O'Sullivan @CliodhnaOS]

So delighted to see this! I read it last year & thought 'this should be up for prizes' so am very glad to see it happening now 🥳👏🏆
@neevkm @picadorbooks

[Niamh Mulvey @neevkm]

I am thrilled to be shortlisted for the John McGahern Book Prize for Hearts and Bones alongside @missflannery for The Amusements and Niamh Prior for Catchlights

[Peter McGann @peterjmcgann]

A man has a bleak epiphany sending a voicenote to a radio show

[Cliodhna O'Sullivan @CliodhnaOS]

'The greatest gift capitalism ever granted was the ability to validate selfish behavior as a virtue'

[EM Templin - Novelist @em_templin1]

Just something for a good laugh

[Daniel Storey @danielstorey85]

No spoilers, but this is the cleverest football advert I've ever seen.

[Jonathan @jonathanmb32]

After rewatching The Dark Knight last night I remembered that immediately after Ledger's death, Nolan wrote a piece for Newsweek about working with Ledger. I found it on the rotting remains of their website and man it still hits hard (I copy/pasted it to a Word doc due to ads)

[Jeff Berardelli @WeatherProf]

Communicating climate requires eye catching and simple visuals. This graphic adapted from @SafeClimate is one of the best I've seen showing the stark recent rise in temperature. Today's warming rate is >50X the rate after the last ice age More info: https://t.co/o0DH4NyO3s 1/

[Cliodhna O'Sullivan @CliodhnaOS]

@SarahJayBee @EmerTheScreamer @Gill_Books Yay! & what an achievement. Can't wait!