The Demon Detective Agency. The Demon Series, #2

In the heart of Los Angeles, LAPD officer May Brubaker leads a life defined by law and order. But when her partner is brutally murdered under mysterious circumstances and her mother is threatened by an unseen, malevolent force, Brubaker finds herself thrust into a terrifying world of the supernatural. As the darkness closes in, Brubaker turns to eccentric English professor, Peter Samuels, an expert on the paranormal, who reveals a shocking truth: Brubaker herself is the key to an ancient, dark power that could spell doom for humanity if unleashed. As the City of Los Angeles is gripped by fear, Brubaker must confront her own fears and unravel the mystery behind the evil forces that threaten her family and her world.
With the help of Professor Samuels, she embarks on a perilous journey to uncover the secrets of her past and harness the power within her to protect humanity from an ancient evil. In a thrilling race against time, Brubaker faces off against the forces of darkness in a battle that will decide the fate of the world. "The Demon Detective Agency" is a gripping tale of good versus evil, where one woman's courage and determination stand as the last line of defence against the horrors of the unknown.