Cathy Rentzenbrink

Author.

The Agatha Christie Cure

Out 10th September 2026

Cathy Rentzenbrink first fell in love with the books of Agatha Christie at the age of nine, when her grandmother introduced her to them and paid her 10p for every Agatha mystery she finished. An avid reader ever since, Cathy went on to work as a bookseller at Waterstones and as the Books Editor at The Bookseller, before becoming the Sunday Times top ten bestselling author of The Last Act of Love and many other titles. When she was facing the end of her marriage around her 50th birthday, Cathy sought relief in Agatha’s books once more, and found them giving her the emotional glue she needed. She remains a staunch fan of any mug with an Agatha Christie quote on it.

Preorder here

You can follow me on Instagram @CatRentzenbrink

My June newsletter is out, and it’s all about this brilliant book by my agent, Rachel. Like its author, it is clever and thought-provoking and original and hopeful. Link in bio to read the full newsletter ❤️ Very exciting @bookshop_org_uk 📖 Here it is: the beautiful cover. We did it. We’ve had a few days of sun, and I’ve been feeling the benefits of getting outside and lying on the grass among the daisies. I find daisies such valiant little flowers, so cheery and hopeful. I’ve been thinking a lot about hope, and that’s going to be the subject of the May Sunday Session (on the 17th), though I’m enjoying thinking about it already and found a relevant painting at Truro Museum yesterday that I’ll be using as an exercise. This is the face of a woman whose book has gone to copy edit. Here’s a squinty photo of me on the beach. Ordinary Time is 99p on kindle today ❤️🚂 Happy 2026 to you from my garden. Very much looking forward to my writing workshop on the last afternoon of 2025. We’ll be waving goodbye to the old year and saying hello to the new. Gentle, encouraging, restorative ❤️

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