★A Major Advance Deal with Random House in the United States★
★A Publishing Deal with Rizzoli, an Imprint of Italy’s Largest Publishing Group, Mondadori★
★Translation rights currently under consideration in Russia, Taiwan, Indonesia, Spain, Germany, and Brazil★
★Korean Mystery Chosen by Yilin , China’s Leading World Literature Magazine★
Joo Gwan-sik lives a lethargic life teaching math at a high school. That is, until a cat named Hodu and the students of the math club, ‘Zero,’ begin to crack the surface of his monotonous existence. One day, Nam Woo-hyun, a mathematical prodigy whose brilliant talent had once deeply shaken Gwan-sik, throws himself off the school roof. The suicide leaves behind an insolvable mystery, accompanied by a series of strange, cryptic incidents brewing in the shadows. Alongside his new gig as a “cat detective” helping frantic owners find their lost cats, Gwan-sik finds himself pulled into a strange, unfolding new world he can no longer ignore.