It was in the 1980s, when I was ITN’s Defence Correspondent, that I wrote my first successful book. I’d persuaded the Royal Navy to give me a TV ‘exclusive’ on board a Polaris missile submarine. After two days at sea, I was hooked by the submariners’ secret world and decided this would be the background for my next attempt at fiction. I spun a spy story around nuclear missiles and my agent persuaded Century-Hutchinson to buy it. Sky Dancer came out in 1987. Two more books with naval themes followed in the next six years, the second of which, Eagle Trap, got into the best-seller lists. Later, the war in Bosnia gave me the story for Scorpion Trail, published in 1995. That same year I decided to give up my TV news career to concentrate on writing full time. The themes of my novels moved away from naval activities into the world of the Secret Intelligence Service, MI6. And now, most recently, into a murder mystery set in the past.