Simon and Elizabeth are sent by the Council to 1912 England to make sure scientist Niels Bohr survives long enough to attend a secret meeting. But as tensions in Europe rise and the makings of World War loom on the horizon, they're not the only ones concerned with Bohr's meeting. And not everyone wants him to make it. Keeping Bohr alive is hard enough, but when he books passage on the Titanic, their task might just be impossible. Forced to follow him onto the ship, they must face mysterious assassins, dangers at every turn and survive one of the most infamous disasters in history.