Synopsis: "During a class video about the Mona Lisa, Lucy Nightingale and her best friend, Sam Winter notice that the painting seems to be melting. Sam thinks it has been attacked by a molecule-destroying syndrome called Zoom Seizure. On winter vacation, Lucy and her parents go to Paris where she can investigate. In the Mona Lisa Gallery of the Louvre Museum, Lucy bumps into Melissa Blackwood, a classmate from home. Melissa shocks Lucy telling her that she is the reincarnation of Mona Lisa and that she has come back to steal the painting. That night, the painting is mysteriously stolen and Lucy must find it before Zoom Seizure destroys it. In an adventure that takes Lucy through the ghost-infested Catacombs of Paris, down underground rivers, and back to sixteenth-century France, she solves a mystery that would shock the world if it were ever made public." – quoted from this book's product page on Amazon.com as of 2018-01-23.