The Howard Families were the product of a genetic experiment, an interbreeding programme which had produced one hundred thousand people with an average life expectancy of a century and a half. Now, at last, their existence was known on earth, and the entire world demanded to share the "secret" of eternal youth. "It is contrary to our customs to permit scientific knowledge to be held as a monopoly for the few" was what the expert said and it wasn't long before members of the Howard Families were the victims of vicious crime. This dramatic and frighteningly believable novel is a welcome addition to the oeuvre of a brilliant science-fiction writer.