“A delightful, dark, and entertaining romp . . . Molly Tanzer is at the top of her form in this beautifully constructed novel.”—Jeff VanderMeer, best-selling author of the Southern Reach trilogy Victorian London is a place of fluid social roles, vibrant arts culture, fin-de-siècle wonders . . . and dangerous underground diabolic cults. Fencer Evadne Gray cares for none of the former and knows nothing of the latter when she’s sent to London to chaperone her younger sister, aspiring art critic Dorina. At loose ends after Dorina becomes enamored with their uncle’s friend, Lady Henrietta “Henry” Wotton, a local aristocrat and aesthete, Evadne enrolls in a fencing school. There, she meets George Cantrell, an experienced fencing master like she’s always dreamed of studying under. But soon, George shows her something more than fancy footwork—he reveals to Evadne a secret, hidden world of devilish demons and their obedient servants. George has dedicated himself to eradicating demons and diabolists alike, and now he needs Evadne’s help. But as she learns more, Evadne begins to believe that Lady Henry might actually be a diabolist . . . and even worse, she suspects Dorina might have become one too. Combining swordplay, the supernatural, and Victorian high society, Creatures of Will and Temper reveals a familiar but strange London in a riff on Oscar Wilde’s The Picture of Dorian Gray that readers won't soon forget. “An artful, witty, Oscar Wilde pastiche with the heart of a paranormal thriller.”—Diana Gabaldon, best-selling author of Outlander

Amityville baywoman Ellie West fishes by day and bootlegs moonshine by night. It's dangerous work under Prohibition—independent operators like her are despised by federal agents and mobsters alike—but Ellie's brother was accepted to college and Ellie's desperate to see him go. So desperate that when wealthy strangers ask her to procure libations for an extravagant party, Ellie sells them everything she has, including some booze she acquired under unusual circumstances. What Ellie doesn't know is that this booze is special. Distilled from foul mushrooms by a cult of diabolists, those who drink it see terrible things—like the destruction of Long Island in fire and flood. The cult is masquerading as a church promising salvation through temperance and a return to "the good old days," so it's hard for Ellie to take a stand against them, especially when her father joins - but Ellie loves Long Island, and she loves her family, and she'll do whatever it takes to ensure neither is torn apart.

Two young witches, once inseparable, are set at odds by secrets and wildly dangerous magic. In the waning days of World War II, with Allied victory all but certain, desperate Nazi diabolists search for a demonic superweapon to turn the tide. A secluded castle somewhere in the south of Germany serves as a laboratory for experiments conducted upon human prisoners, experiments as vile as they are deadly. Across the English Channel, tucked into the sleepy Cumbrian countryside, lies the Library, the repository of occult knowledge for the Société des Éclairées, an international organization of diabolists. There, best friends Jane Blackwood and Miriam Cantor, tutored by the Société’s Librarian—and Jane’s mother—Nancy, prepare to undergo the Test that will determine their future as diabolists. When Miriam learns her missing parents are suspected of betraying the Société to the Nazis, she embarks on a quest to clear their names, a quest involving dangerous diabolic practices that will demand more of her than she can imagine. Meanwhile Jane, struggling with dark obsessions of her own, embraces a forbidden use of the Art that could put everyone she loves in danger. As their friendship buckles under the the stress of too many secrets, Jane and Miriam will come face to face with unexpected truths that change everything they know about the war, the world, and most of all themselves. After all, some choices cannot be unmade—and a sacrifice made with the most noble intention might end up creating a monster.