From a fresh new voice, a debut thriller with an obsessive, twisted love story that will keep you guessing.

The vote has changed everything. The country is divided. Nobody feels safe. Myles wakes up to a UK that has legalised euthanasia. While people reel from the result, he grapples with the biggest mistake of his life. Erica escapes a nightmare and is finally able to embrace her freedom. What starts as a liberating adventure quickly changes into a terrifying self discovery about what she is capable of.

In the midst of the chaos, a retreat is created that will become the antidote to suicide. In this place, people can hope. In this place, people can heal. The retreat is secretive. Tucked away in the countryside, it doesn’t have to answer for what happens within its walls. But what happens if it won’t let people leave? Morality, obsession and danger collide as Myles enters the retreat in an attempt to find Erica. To get her back, he must become the sickest of them all.

For fans of The Handmaid’s Tale, Mercy is a radical exploration of freedom at all costs and takes the reader on a roller coaster ride to the heights and caverns of their emotions.

About the Author

Tuula Costelloe studied Drama and Theatre at Trinity College Dublin, before returning to London to begin a career as a ‘Scream Queen’ in indie horror movies. In December 2023, her first play Christmas is Cancelled had its London debut to critical acclaim. When she isn’t acting or writing, Tuula lives and works in Ibiza as a gogo dancer and chills with the cats and dogs she pet sits. They make the best writing buddies! Mercy is her first novel.