Sixteen-year-old Olivia Prior is missing three things: a mother, a father, and a voice. Her only companions are the ghouls she sees and her mother's journal, which captured a mind in turmoil. 

Until she receives a letter from an uncle she's never met, summoning her to his estate, Gallant. But when she arrives, she discovers her uncle is dead and the estate is empty, save for her cousin Matthew and the servants.

Gallant is a house of secrets. A house sitting in lonely vigil. A place where the ghouls are powerful. As Olivia searches for answers about her family, her past, she discovers a dark reflection of everything she knew, an ancient realm where ghosts take form, and the dark master sits waiting for her.