The moving novel about an architect who helps a dying man uncover the heartwrenching family secrets embedded in the walls of a once-beautiful Parisian mansion.

An instant #1 bestseller in South Korea

One morning, a phone call from a real estate agent changes the life of Lumiere, a broke architect in Paris. He is invited to view a historic mansion on the Ile de la Cité, a location far beyond his wildest dreams. If approved, he'll be able to call it home.

But once he arrives at the mansion, he sees that the home is dilapidated, and he is overcome with an eerie feeling. Neverthless, he can't help but notice the eccentric features of the building, hidden under dust and debris.

But there is a catch. Before he can take over the home, he must visit the ailing owner at a sanatorium in Switzerland and help him uncover the family secrets embedded in the mansion's walls. . . .