​The truth isn’t found in what’s painted. It’s hidden in what’s been erased.​Mary Vane is a master of the invisible. A world-class restorer, she spends her days peeling back layers of grime to reveal the genius of dead men. But when her brother Elias... the eccentric archivist for the prestigious Blackwood Gallery... is found dead in the center of the rotunda, Mary realizes she’s been looking at a forgery. Elias didn’t fall; he was pushed.​To find his killer, Mary must descend into the gilded shadows of the Blackwood empire, led by the enigmatic and lethal Joseph Blackwood. Joseph doesn't just collect art; he collects people, and he’s decided that Mary is his next masterpiece.​As she navigate a "Grand Tour" of corruption, from the bone-lined Catacombs of Paris to a forbidden vault beneath the tides of Mont St. Michel, Mary uncovers the Corvus Network: a global conspiracy where the world’s greatest masterpieces are merely decoys for a darker trade.​In a world where every smile is a mask and every canvas is a lie, Mary must decide if she’s willing to burn the gallery to the ground to save her soul. Because in the Judas Glass, the only thing more dangerous than a fake painting is a woman who finally sees the truth.