As we all know, in space, no one can hear you scream. Which doesn't mean that anyone is safe just because they're standing on the soil of planet Earth, because if a thing from out there drops in, screaming probably won't save you. Earth has spawned myriad unpleasant life forms which are bad news for humans, ranging in size from the Ebola virus to the great white shark up to the Tyrannosaurus Rex (extinct, fortunately for us)--and that's just one planet. What even more deadly life forms might the billions of planets in our galaxy have spawned? And suppose the things are intelligent and capable of crossing space and coming here . . . Considering that very possibility are the masters of science fiction starring in this book, including Robert Silverberg, David Drake, Sarah A. Hoyt, James H. Schmitz, Fritz Leiber, Robert Sheckley, Murray Leinster and John W. Campbell, as well as classic stories of extraterrestrial horrors by H.P. Lovecraft, George Allan England and more. E.T. might have been happy eating Reese's Pieces, but other visitors from the void might have less dainty appetites. And there are probably worse things than merely being eaten.