In the first desperate days of the Human-Covenant War, the UNSC has enacted the Cole Protocol to safeguard Earth & its inner colonies from discovery by a merciless alien foe. Many are called upon to rid the universe of lingering navigation data that would reveal the location of Earth. Among them is Navy Lieutenant Jacob Keyes. Paperback , 358 pages Published October 1st 2009 by Tor Books (first published November 25th 2008)