"Seventeen-year-old Anouk has been chosen to participate in an exclusive program, which includes an all-expense-paid trip to France and a chance to explore the hidden underground Palais du Papillon, or the Palace of the Butterfly. Along with four other bright and talented teenagers, Anouk will be one of the first people to set foot in the palace in more than 200 years. But the expedition is not all it seems--their supposed benefactors are attempting to kill them. The story alternates between Anouk's flight through the palace and the struggles of Aurelie, who escaped the French Revolution by fleeing into the Palais du Papillon in 1789. A fast-paced, haunting adventure story"--Provided by publisher.