In Probability Space, humanity's war with the alien Fallers continues, and it is a war we are losing. Our implacable foes ignore all attempts at communication, and they take no prisoners. Our only hope lies with an unlikely coalition: Major Lyle Kaufman, retired warrior; Marbet Grant, the Sensitive who's involved with Kaufman; Amanda, a very confused fourteen-year-old girl; and Magdalena, one of the biggest power brokers in all of human space.
As the action moves from Earth to Mars to the farthest reaches of known space, with civil unrest back home and alien war in deep space, four humans-armed with little more than an unproven theory-try to enter the Fallers' home star system. It's a desperate gamble, and the fate of the entire universe may hang in the balance.
"Kress has blended such a nice set of surprises and inevitabilities that you should learn and read and enjoy them for yourself. You don't have to read Probability Moon to have a good time, but you'll probably search it out anyway."
San Diego Union-Tribune on Probability Sun
"Kress's Sleepless trilogy proved that she was a serious writer, worthy of considered attention. Probability Moon only emphasizes that."
