March 1833. Kiera and her husband, Sebastian Gage, have decided to settle in Edinburgh for the winter with their infant daughter. This also allows Kiera to enjoy long hours painting in her studio, making progress on the portraits she soon hopes to unveil in her own exhibit. She's thrilled when she receives an invitation to the auction of the late Lord Eldin's coveted art collection, and she and Gage eagerly accept. When the floor collapses beneath the gathering, killing one of their fellow bidders, Kiera and Gage are lucky to escape with their lives.

It soon becomes apparent that what at first seemed to be a terrible accident is actually something far more nefarious. Someone deliberately compromised the integrity of the structure, though the police are unsure of the culprit's aim. Sergeant Maclean requests Kiera and Gage's assistance in figuring out who would wish to harm the bidders. As they dig deeper, they discover that the victim was not the killer's intended target . . . and that Kiera was lured to the auction. Kiera and Gage must utilize all their resources to unveil a monster willing to risk the lives of dozens of bystanders to achieve their ends. But they're on the verge of making a dire miscalculation. For one of the cleverest tricks in a painter's repertoire is the art of misdirection, and their eyes have been drawn far from the gravest danger.