From the bestselling author of The Dovekeeperscomes a spectacularly imaginative and moving new novel in the vein of The Night Circusthat has been acclaimed by Jodi Picoult as 'truly stunning: part love story, part mystery, part history, and all beauy'.

New York City, 1911. Meet Coralie Sardie, circus girl, web-fingered mermaid, shy only daughter of Professor Sardie and raised in the bizarre surroundings of his Museum of Extraordinary Things.

And meet Eddie Cohen, a handsome young immigrant who has run away from his painful past and his Orthodox family to become a photographer, documenting life on the teeming city streets. One night by the freezing waters of the Hudson River, Coralie stumbles across Eddie, who has become enmeshed in the case of a missing girl, and the fates of these two hopeful outcasts collide as they search for truth, beauty, love and freedom in tumultuous times.