The Apocalypse Gate

Mellissa Carlisle is soon to be Custos. But will there be a world for her to protect?
Actions in the middle, and far east result in a catastrophic event which obliterates Mecca. The world destabilizes rapidly as the destruction triggers a fleet of huge mother ships which have been dormant for millions of years. The Apocalypse Gate Protocol is initiated,and the ships begin to systematically extinguish humankind. Mellissa Carlisle, and an old friend are mankind's only hope of survival. The abort code is lost, and the supercomputer is preventing them from stopping the cleansing of the planet. It comes down to one of them making the ultimate sacrifice. One way or another, this will be Mellissa's final mission,