Barry (J F) Kirwan is a split personality. He writes science fiction under the name Barry Kirwan, and thrillers under his pen name J F Kirwan. In his day job, he travels worldwide, working on aviation safety. He lives in Paris, where he first joined a fiction class – and became hooked! This led to an acclaimed four-book series called the Eden Paradox. But when a back injury stopped him scuba diving for two years, he wrote a thriller series about a young Russian woman, Nadia, where a lot of the action occurred in dangerously deep waters. Since then he wrote a serial killer thriller called The Dead Tell Lies, and is writing a new scifi series starting with When the Children Come....