Measureless to Man by Philippa Ballantine

Philippa Ballantine's short story is "Measureless to Man". Someone is dead on the orbiting space station Kubali, and someone soon will be. Time is running out for Io, she must find out why her friends have been killed and save herself from the same fate. But something is waiting in the shadows for her, something that even she, the last of the Skin Natives, has never seen before.