Book One of the Anniversary Day SagaFour years ago, a bomb destroyed part of the dome protecting Armstrong, the largest city on the Moon. Now, as the city celebrates its survival with an event it calls Anniversary Day, a larger threat looms-one that begins with the murder of the mayor, and spreads across the Moon itself.Even with every new technological device at her disposal, Moon Security Chief Noelle DeRicci can't stay ahead of the unfolding disaster...