From the author of The Light on Farallon Island comes a haunting novel about the power of science, the nature of love, and the enigma of the supernatural.

Convention-flouting Nora Harris is a determined young medical student in Gilded Age Manhattan. A surgeon’s daughter, she always leads with her head—until her father’s latest protégé, Euan Colquhoun, steals her heart. Love and logic bind the newly betrothed couple together, but a tragic accident cuts their bright future short.

Grief-stricken, Nora finds surprising comfort in corresponding with Euan’s older brother, Malcolm. She decides to forsake her ambitions to retreat to the Colquhoun family farm deep in the tangled woods of upstate New York.

There, her longed-for peace is threatened by a suspicion that the whole family harbors haunting secrets. When she starts to see things that science can’t explain, Nora fears for her sanity—and when she gives in to dangerous temptations, she fears for her immortal soul.