The Stolen Smile

One night in the Louvre, the glass in front of the Mona Lisa fogs up from the inside, and Noor hears it humming. When she and her brother Felix touch it together, they land in Florence in December 1913, two years after the painting was stolen, on the night before it is found. But someone else is in Florence with a perfect copy, and Felix is sure he knows which one is real.