Emily Wilde has refused the marriage proposal of her former academic rival, Wendell Bambleby, because she would be mad to marry a deposed faerie king disguised as a human. But she has devoted herself to finding a door into his kingdom, which would allow him to take back the realm stolen from him by his stepmother. Emily’s quest takes her to the isolated Alpine village of St. Liesl, accompanied by Wendell and two unexpected companions: Emily’s niece Ariadne, an aspiring dryadologist, and Farris Pole, the prickly head of the Dryadology Department, who blackmailed Emily into including him. Much of the plot follows the outline of the previous volume, Emily Wilde’s Encyclopaedia of Faeries (2023): Emily and her cohort stay in a guesthouse; everyone but Emily manages to befriend the locals (she’s hopeless at social niceties); Emily encourages hikes into the countryside, where they have perilous encounters with the local faeries; and Emily’s determination leads her to behave rashly, endangering everyone’s lives, until her cleverness and intuitive understanding of faerie behavior allow her to triumph. But Emily’s adventures remain entertaining, thanks to the neurodivergent heroine whose blunt behavior and affinity for peculiar logic present a problem when interacting with humans but prove an asset with faeries. This book also offers new emotional depths for Emily, who struggles with her growing but potentially life-threatening love for Wendell, unexpected affection for her niece, and fraught relationship with Farris Pole. Now that she has people to care about, the previously solitary young woman has to reckon even more closely with the consequences of her behavior and how it affects those around her. Emily feels like a character worth following; hopefully the next installment shakes up the format a little.