They murdered his boss, stalked his family and invaded his home. Now they want his life.

When jack Hunt is lured from his native Dublin to Chicago's top hospital, the talented young heart specialist sees a new life ahead for his family. The day he's appointed head of the unit, his own dreams are fulfilled.

But he's promoted into a nightmare. Random street attacks, mindless vandalism, round-the-clock surveillance. Within months Jack Hunt's world collapses.

His fight back sets him on a dangerous mission, uncovering explosive secrets. But he won't be able to tell the world if his enemies can find him first...

Paul Carson is a doctor and novelist. He lives in Dublin with his wife and two children, where he runs an asthma and allergy clinic for children as well as writing. Final Duty, Cold Steel and Scalpel have all been hardback top ten bestsellers in Ireland, Scalpel spending 17 weeks at number 1.

The number 1 bestseller: a heart-stopping, unputdownable thriller of corruption, greed and a deadly secret.