The Detective Is Already Dead, Vol. 12

After saving the world from collapsing, the two Ace Detectives and their assistant, Kimihiko Kimizuka, are immediately thrust into the next crisis: the Tuner Hunt. But when the likely culprit surfaces, it turns out to be the most unforgettable girl of all! Meanwhile, a client visits the Shirogane Detective Agency claiming to have been reunited with Kimihiko’s teacher—a man who supposedly died eight years ago. What is real and what is fake? What’s true and what’s a lie? Within four locked room…