51XvJM1BHnL._AA160_ I am in the middle of this title by Catherine Coulter and it is a definite pageturner. It is the latest adventure for the FBI couple Michaela Caine and Nicholas Drummond, this one being a search for a lost key to research done by Marie Curie. The premise is that Curie developed a powerful isotope of a radioactive material by extending its half life, and the agents must find her research before the wrong people do. It is hidden in a sunken sub in Scotland, and it is a race to the finish, with several bodies piling up along the way. The notion that an implant hidden inside a human can be used as a nano-bomb is quite frankly chilling, and I hope the ability to do so will not develop for a very long time. Great spy novel, however.