In the second book—“Twilight”—the virus spreads across the entire planet. The tsar-vampire, the Ruler, is ready to wipe out the human race. Standing against him are still the old professor Abraham Setrakian, the epidemiologist Ephraim Goodweather, the doctor Nora Martinez, and the rat-catcher Vasily Fet. The new book is even more full of horror: it seems the world of people really stands on the edge of extinction. But Setrakian and Goodweather understand: there are things far more terrible than death…