M. Zumwalt

After avoiding an arranged marriage, thwarting a coup, and inadvertently kick-starting a revolution, Rory Thorne has renounced her title and embraced an unglamorous life as a privateer on the edge of human space. Her new life is interrupted when Rory and her crew - former royal bodyguards, Thorsdottir and Zhang, and coconspirator Jaed - encounter an abandoned ship registered under a false name, seemingly fallen victim to attack. As they investigate, they find evidence of vicious technology and arithmancy, alien and far beyond known capabilities.

Pre-med student Coral is on vacation in Idaho when something terrible happens. The black cloud is followed by a wildfire and searing heat that lasts for days. She survives deep in a cave but emerges days later to find the world transformed, with blackened trees, an ash-filled sky, and no living creatures stirring - except for her. So begins her desperate journey to find water and food and other survivors...and the answer to the mystery of what happened.