k52 is a vast artifical intelligence with world domination on its mind. If it succeeds in creating an artificial reality based on our own universe, it could gain enough data to allow it to alter reality itself, turning k52 into the ultimate arbiter of mankinds fate.Its down to Richards and Klein to stop k52even though the alternative could be worse!Fascinating characters in a very believable future. Mike ResnickGuy Haley is a hidden gem of British Science Fiction. Paul Cornell