A Killer Among the Masks reached #5 in Amazon Best Sellers in Folklore , delivering a tense mystery where nothing—and no one—is what they seem. Something is hiding behind the masks… and it’s not afraid. The Kukeri festival in Pernik is meant to drive evil away. With fire, noise, and terrifying costumes, the dancers become something ancient—something powerful—meant to protect the living. But this year… something answers back. When a body is found in the middle of the celebration, what begins as a brutal murder quickly turns into something far more unsettling. The killer isn’t just hiding in the crowd. He belongs there. Inspector Ivanov is called to investigate, but the deeper he digs, the more the line between ritual and reality begins to blur. Witnesses contradict themselves. Fear spreads quietly. And the masks—once symbols of protection—start to feel like something else entirely. Because the real danger isn’t something lurking in the dark. It’s something familiar. Something trusted. Something already inside the circle. And this time… it’s not running.