There were five of them. Each a carbon copy of the other and of their astrophysicist father. Each, in time, to be subjected to hostility, fear and abuse from a society which still couldn't face the truth of their existence.

But their creators were determined that the Swenson clones should survive to fulfil the purpose for which they had been bred. This is their story: their dreams, their loves, their terrors and the strange destiny that kept them bound as one.

Contains, in substantially different form, the short stories "Father", "Clone Sister" and "A Sense of Difference".