Alice Hastings Bradley Sheldon - better known to the world as science fiction writer James Tiptree, Jr - produced just two novels, in a glittering but tragically short career. Gollancz is delighted to present them together in this omnibus edition:

UP THE WALLS OF THE WORLD

A secret US navy research project is founded to investigate the existence of paranormal powers, bringing together a variety of men and women who have shown indications of telepathic ability. As a result of the experiment they make mental contact with the Tyrenni, strange alien beings resembling winged squids who dwell in the upper atmosphere of their tempestuous world.

The aliens’ world, Tyree, is being threatened by a huge being, the Destroyer, which is moving inexorably towards them, obliterating whole solar systems in its path. When the Tyrenni realise that it threatens to exterminate life on Tyree, they are forced into the decision - contrary to all their moral beliefs - to take over the bodies of their human contacts in order to preserve their race.

BRIGHTNESS FALLS FROM THE AIR

Sixteen humans have come together on Damien, a distant world where once, dreams were stolen and atrocities took place. They have gathered to view the last rising of a manmade nova, the testament to a war none can forget.

Soon, time will warp and masks will fall. Soon, violence will erupt anew - along with treachery, horror, murder, release and love.

Soon, some will find justice … and others, judgement. Soon.

Now, sixteen humans have gathered - to await the light of the Murdered Star.