A dark and atmospheric gothic fantasy filled with dangerous magic, hidden secrets, and slow-burning romance, One Dark Window is the first book in Rachel Gillig's The Shepherd King duology.

Elspeth Spindle has a dangerous secret. Trapped inside her mind is an ancient, unpredictable spirit she calls the Nightmare. He protects her, keeps her secrets, and lends her his power, but his magic always comes at a price.

When Elspeth encounters a mysterious highwayman on a forest road, she finds herself drawn into a dangerous quest to free the kingdom of Blunder from the dark magic that has plagued it for generations. Surrounded by shifting loyalties, forbidden magic, and growing danger, Elspeth must decide who she can trust.

As an unexpected romance begins to develop, Elspeth faces an even greater threat. The Nightmare is growing stronger, slowly taking control of her mind, and she may be running out of time to stop him.

With its mist-covered forests, haunting atmosphere, unique magic system, and irresistible romance, One Dark Window is perfect for readers who love gothic fairy tales, morally complex characters, and fantasy with a darker edge.