In Neutrino Hunters, the renowned astrophysicist and award-winning author Ray Jayawardhana takes us on a thrilling journey into the shadowy world of neutrinos and the colorful lives of those who chase them. Demystifying particle science along the way, he tells a detective story with cosmic implications—interweaving the tales of the irascible Casanova Wolfgang Pauli; the troubled genius Ettore Majorana, who disappeared without a trace; and Bruno Pontecorvo, whose defection to the Soviet Union caused a Cold War ruckus. Ultimately, Jayawardhana reveals just how significant these fast-moving particles are to the world we live in, and why the next decade of neutrino hunting will redefine how we think about physics, cosmology, and our lives on Earth.