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A Hugo and Nebula Award-winning novel of plague and time travel by an SFWA Grand Master of Science Ficiton.

About the Author

Constance Elaine Trimmer Willis has won, among other accolades, ten Hugo Awards and six Nebula Awards for her writing, and was recently named an SFWA Grand Master. She lives in Greeley, Colorado with her husband Courtney Willis, a professor of physics at the University of Northern Colorado.