‘This high-stakes revenge thriller is one of the hottest reads right now… unmissable.’ Independent, Best Summer Reads 2026

A mother under attack.

Three years ago, Daphne Monroe woke up to find her family had been murdered while she slept. To the police, she’s the prime suspect. To the world, she’s a monster. To the killer, she’s the next victim on a blood-soaked list.

A killer on the move.

Now he’s back to finish what he started – and Daphne should be running for her life. Instead, she’s trying to make sense of a tangled web of medical obsession, organ donation, and a young girl’s murder.

Nothing to lose.

Three years ago, the serial killer destroyed her life and broke her heart. Now, Daphne wants justice for her murdered children and she’ll stop at nothing to get it.

But the killer is closing in. And Daphne Monroe is out of time…

Gripping, intelligent and emotionally charged, Heartbreaker is a compelling new crime thriller for readers who love Harlan Coben, Sam Holland and M. J. Arlidge.

Reviewers love Judith O’Reilly:

‘A nail biting, high-octane thriller’ The Sun

‘Gripping and twisty’ India Knight

‘Thought-provoking, pacy and thrilling’ Sunday Mirror

‘Full of pace, tension, character, and emotion’ Lee Child