Author Spotlight: Iris Costello | Author Interview

In this episode of Reading Materials, we’re joined by author Nuala Ellwood, also known as Iris Costello, to talk about her newest novel The Paris Bookshop Secret, released in July 2025. Nuala shares how a haunted Georgian mansion inspired her current project, the power of books to help readers process grief, and the rituals she uses to get into the writing zone.It’s a rich and reflective conversation about creativity, emotion, and the healing power of storytelling.Thank you to Penguin to sending us proofs of The Paris Bookshop Secret.Episode Timepoints:00:00 - Intro00:20 - Our interview with Nuala Ellwood01:05:00 - Outro