The Spy (Isaac Bell #3) by Clive Cussler

Detective Isaac Bell, hero of The Chase and The Wrecker, returns in the remarkable new adventure from the international bestselling author of Clive Cussler.

Bell's new case is his most extraordinary yet . . .

It is 1908, and international tensions are mounting as the world plunges towards war. When a brilliant American battleship gun-designer dies in a sensational suicide, the man's grief-stricken daughter turns to the legendary Van Dorn Detective Agency to clear her father's name. Can Dorn puts his chief investigator on the case, and Isaac Bell soon realises that the clues point not to suicide, but to  murder. When more suspicious deaths follow, it becomes clear that someone - an elusive spy - is orchestrating the destruction of America's brightest technological minds . . . and the murders all connect to a top-secret project called Hull 44.

But that is just the beginning. As the intrigue deepens, Bell finds himself pitted against German, Japanese and British spies in a mission that encompasses dreadnought battleships, Teddy Roosevelt's Great White Fleet, Chinatown, Hell's Kitchen and the Brooklyn Navy Yard. Isaac Bell has certainly faced perilous situations before, but this time it is more than the future of his country that's at stake - it's the ate of the world.