K Arsenault Rivera & Brooke Bolander 
The Shadow Files of Morgan Knox 

In 1930s Manhattan, a PI who can perceive supernatural phenomena investigates an inexplicable and horrifying murder.

Morgan Knox sees the Darkness coming. Fourteen years after her experiences during World War I cursed her with the ability to perceive horrific supernatural phenomena, Knox is a private investigator in Manhattan, specializing in weird and macabre cases. But when a mysterious old man posthumously hires her to investigate his own death, she finds herself in a shadowy maze of power, corruption, temptation, and paranormality that threatens not only to erode her sanity, but to bring forth a monstrous evil that could destroy the world.