Light Riders and the Fleur-de-lis Murder

When 15-year-old Ryn and his younger sister, Aeden, find themselves in Paris, France due to the murder of a distant relative, they cannot resist the temptation to travel back in time to find the killer—but something goes terribly wrong. They wind up in 18th century Paris a day before the storming of the Bastille and the start of the French Revolution.
The Bastille itself becomes their enemy as they fight their way through mazes, traps and dead-ends, simply to come face to face with the very man who is intent on ending their bloodline and a madwoman out for revenge. With a bloodthirsty mob of angry citizens only hours away, Ryn and Aeden must rely on their instincts and skill to escape a frightening fate. Will time be their ally or their enemy?