Passing Through Veils

A fusion of Shirley Jackson and Gillian Flynn, Passing Through Veils is a gripping psychological thriller about Kathryn Fields who moves into a run-down Georgetown, D.C. townhouse in hopes that restoring it will be a metaphor for her own rehabilitation from the recent nervous breakdown that derailed her promising career.
But when she discovers a forgotten vanity behind a false wall in her bedroom and the secrets hidden there, the veil between the real and the surreal is abruptly pierced, and the ghost of a beautiful woman who was murdered in this very townhouse escapes to seek revenge.
Is this simply a fantasy of Katherine's damaged psyche?
Or have her own demons finally escaped to torment her?