Most of the seven stories in this collection deal with alternate realities or time travel. All were written between 1956 - 1961. In true Wyndham style, all of the stories are well written, easy to read, and fit his style - heavy on humanity and low on violence. Wyndham was ahead of his time when it came to social issues and unique science fiction plot twists. The story "Random Quest" may be one of the best short stories I've ever read.