Bob Shaw
Bob Shaw, born Robert Shaw, (1931–1996) was an Irish science fiction author.
Embittered and cynical, Denny Hargate is doomed to spend his days in a wheelchair. But one day he sees a beautiful young woman make a strange and elaborate sign in the air - and vanish!
He is Terran.
She is Gretana ty Iltha, an observer from the distant world of Mollan. They were not supposed to meet.
When they do, the resulting culture shock cuts both ways... with explosive results!