This book is actually the best one of the two robot city series (Robot City and Robots and Aliens). Unfortunately I had to wade through 12 not very good books to find it, and its still not stellar. I’d recommend giving both these series a miss unless you’re obsessed with completeness in Asimov’s Robot universe.
Fiction
Ace Books
1990-10
177
Amnesiac Derec, on a galaxy-wide quest for his identity, stumbles upon Ariel Burgess and Dr. Avery, the same man who had obliterated his memory