Sixteen-year-old Olivia Prior is missing three things: her mother, her father, and her voice. Her only companions are the ghosts she sees around her and her mother's diary capturing her mother's troubled soul.
But then she receives a letter from an uncle she never met, inviting her to his estate - Gallant. However, when Olivia arrives, she finds her uncle dead and the house empty except for her cousin Matthew and a few servants.

Gallant is a house of secrets. A lonely house guarding a place where ghosts have great power. Olivia searches for answers to questions about her family and her past, and in the process discovers a dark reflection of everything she knew, an ancient realm where spirits have firm outlines and where the dark master of the house awaits her...