"A delicious page-turner that brings eighteenth-century Stockholm to vivid life, complete with scandal, conspiracy, mystery, and a hint of magic." —Eleanor Brown, New York Times–bestselling author One man's fortune holds the key to a nation's fate in this sensational debut novel set in eighteenth-century Sweden. The Stockholm Octavo by Karen Engelmann transports readers to a colorful Scandinavian world of intrigue and magic in a dazzling golden age of high art, music, and opulent fashion. A masterwork of historical fiction in the vein of Patrick Suskind's classic novel, Perfume, The Stockholm Octavo is mysterious and romantic—as magical and enthralling as The Night Circus by Erin Morgenstern—and features a brilliant and unforgettable cast of extraordinary characters. "A juicy page-turner . . . Engelmann's intellectually playful take on the mathematics of love and power proves irresistible." — O, The Oprah Magazine "Neatly mixing revolutionary politics with the erotic tension and cutthroat rivalry of the female conspirators . . . Engelmann has crafted a magnificent, suspenseful story set against the vibrant society of Sweden's zenith, with a cast of colorful characters balanced at a crux of history." — Publishers Weekly (starred review) "Delicious . . . the essence of witty intelligence . . . The plot is an urgent one, and the characters mysterious, appealing, and memorable." —Sena Jeter Naslund, New York Times–bestselling author "If you like novels that work on many levels at once, read this stunning tessellation of a book, where fortune is the flip side of intrigue and where history is the flip side of chance." —Charlotte Rogan, national bestselling author