Operation Buckingham (The Last Templars #5)

England’s humble princess, who asks to simply be called Mary, has accepted China’s offer to take a ride on a majestic train they call “The Dragon.”
It’s the fastest train in the world and it’s racing toward disaster with terrorists hidden among the passengers and a monster explosive called “Mother of Satan” hidden within its walls.
Fortunately, Doc Holiday and the rest of “The President’s Dozen” (plus three other familiar heroes) are determined to make sure the princess survives.
But to succeed, they must find and defeat a new, blood-thirsty terrorist legion known as The Red Z ...