In a society where identity is a precarious balance between truth and illusion, Darwin Asrael grapples with a unique curse: his skin, which is sensitive to the sun, binds him to the overlooked niches of the public. When he encounters his doppelgänger, Gabriel, He is unexpectedly introduced to the clandestine Hemlock organization. He becomes an unlikely detective, solving crimes as night descends, and leaving Gabriel to perform his role in daylight. But as Darwin investigates a series of chilling murders linked to a mysterious author who documents crime, he unveils layers of deception, drawing Darwin deeper into a web of intrigue where nothing is as it seems. As he follows these narratives' trails, he begins to doubt his own identity, realizing the stories may be more associated with his existence than he ever imagined.