Time no longer flows forward like a river, not for Marella Wells. Randomly propelled into her own past and future, she encounters versions of herself coming and going, and learns that a lethal fog will soon decimate humanity. Her attempts to change the timeline meet with disaster. In desperation, she puts her trust in a humorless man who calls himself a time philosopher. With his advice, surely she can untangle time's threads, reshape history, and save billions of lives. If not, she will lose everyone she holds dear, and endure an eternity of torture. This sequel to The Climate Machine will leave you asking whether fate is truly set in stone.