Tricia Sullivan returns to the genre with a page-turning, surreal high-concept science fiction that will define the conversation within the genre for years to come.

Pearl is an angel.

She works for the Resistance - an organization dedicated to improving the world by tiny, incremental acts of kindness. But Pearl also has wings. They blossom at moments of stress. And she is strong; an extraordinary, terrifying strength capable of breaking the fabric of reality. The Resistance can't account for that, nor for Pearl's mysterious origins. All anyone knows is that she appeared in a New York junkyard in the early 21st century.

Truth is, Pearl doesn't really know what she is, let alone who she is.

Now she is on a pell-mell chase across the world. In pursuit of a killer wearing another man's body. The killer carries a briefcase that is a ragged hole in the Universe. A global conspiracy revolves around it. The nature of reality is determined by it. Pearl's got to get the briefcase back - no matter how shocking its contents may turn out to be.