Paul Melko's first story collection pulls together the best of his science fiction, including the title story, "Ten Sigmas" and "Singletons in Love," both of which were reprinted in The Year's Best Science Fiction, edited by Gardner Dozois. Also in the collection is "Walls of the Universe," a short list finalist for the Nebula, Hugo and Sturgeon Awards in 2007. Several stories are set in the universe of his first novel, Singularity's Ring, from TOR Books in February 2008.