BlackoutandAll Clearare the two volumes that comprise a2010science fictionnovel by AmericanauthorConnie Willis.Blackoutwas published February 2, 2010 bySpectra. The second part, the conclusionAll Clear, was released as a separate book on October 19, 2010.Thediptychwon the 2010Nebula Award for Best Novel,the 2011Locus Award for Best Science Fiction Novel,and the 2011Hugo Award for Best Novel.These two volumes are the most recent of four books and a short story that Willis has written involvingtime travelfromOxfordduring the mid 21st century.