Resurrection of the Damned — Michael Todd

Three months ago, there was a demon invasion. Due to that, old rules are thrown aside as the world figures out just who the enemy really is. A mercenary named Katie (or KatieDora by some) is trying to take a much-needed vacation. Unfortunately, both friends and foes want her in the worst possible way. Katie's Killers are facing a new reality, one where they are needed more than ever now that the world's eyes have been uncovered. Sometimes it just doesn't pay to get up in the morning.