I read an uncorrected digital copy through NetGalley. The book will be released in January and can now be pre-ordered.
My review: Read this book when you have time to put everything else aside. As narration shifts back and forth between Anna, an artist from the 1940's who left behind a bizarre mural, and Morgan, the current-day young woman who has been rescued to restore the mural though she has no training for the work, the mystery of why Anna inserted such strange elements into the painting intensifies. There's also the mystery of why blonde Morgan was chosen for this project.
Readers are rewarded with a satisfactory solution to all mysteries.