Playlist of the Ancient Dead by Aaron Frale

Caroline discovers a doorway in a drab brick building in the middle of a park in Albuquerque where she walks her dog every day. A door had appeared where none had existed before. Murphy, a washed up government agent, contacts Caroline and tells her that the building is nicknamed the warehouse, and it’s older than Albuquerque, older than recorded history. The love of Murphy’s life is trapped inside and he needs Caroline. She is the only one who can confront the darkness inside.