Book excerpt: Orbit is kicking off the Spring/Summer season with a sample of chapters from visionary works of new and returning Orbit authors. New York Times bestselling author Brent Weeks' popular Night Angel trilogy will, for the first time, be gathered into one collectable omnibus edition. N.K. Jemisin follows up her highly acclaimed Inheritance trilogy with The Killing Moon, the first in the Dreamblood duology, featuring assassin priests, mad kings, and the goddess of death. Kim Stanley Robinson's 2312 shows a glimpse into Earth's future of endless possibilities-or total destruction. In debut author V.M. Zito's The Return Man, a lone neuroscientist ventures into zombie territory on a mission to save a divided United States. Also, new to Orbit but no stranger to the fantasy world, Ian Irvine brings Vengeance, an epic tale of revenge and redemption. Finally, Orbit is excited to announce The Science of Avatar, an inside look into the science behind James Cameron's magical movie Avatar.