A sharp-tongued folklorist must pair up with her academic rival to solve their mentor's murder in this lush and enthralling sapphic fantasy romance from the New York Times bestselling author of A Far Wilder Magic.

Lorelei Kaskel, a folklorist with a quick temper and an even quicker wit, is on an expedition with six eccentric nobles in search of a fabled spring. The magical spring promises untold power, which the king wants to harness to secure his reign of the embattled country of Brunnestaad.

Lorelei is determined to use this opportunity to prove herself and make her wildest, most impossible dream come true: to become a naturalist, able to travel freely to lands she's only ever read about.

The expedition gets off to a harrowing start when its leader-Lorelei's beloved mentor-is murdered in her quarters aboard their ship. The suspects are her five remaining expedition mates, each with their own motive.

The only person Lorelei knows must be innocent is her longtime academic rival, the insufferably gallant and maddeningly beautiful Sylvia von Wolff.