Tanya Kagan, a rising specialist in Russian art at a top New York auction house, is trying to entice Russia’s wealthy oligarchs to bid on the biggest sale of her career, The Order of Saint Catherine, while making sense of the sudden and unexplained departure of her husband.

As questions arise over the provenance of the Order and auction fever kicks in, Reyn takes us into the world of Catherine the Great, the infamous eighteenth-century empress who may have owned the priceless artefact, and who it turns out faced many of the same issues Tanya wrestles with in her own life.