Lucero is an arrow without a target. A sea without a moon. A ship without a port. Lucero Nieves doesn't know what she wants, only what she inherited: a family legacy that links her to the Court of James, an ancient institution that protects the society of the Occult Arts. After passing her examination to become an agent, she accepts her first case, which takes her to the enigmatic city of Glasgow. Benedict Knight does know what he wants: to leave his dark past behind and build a future that frees him from his addiction to conjuring illusions. Determined to become one of the best agents in the court, he accepts a dangerous case with his new partner. Poisons that Obsess is a contemporary dark academia that combines the effects of effervescent potions with living under the suffocating attention of social media.