Dreams of Flesh and Sand(1988)
(The first book in the Dreams series)
A novel by W T Quick (Margaret Allan)
Calley cracks unbreakable security systems and Berg builds unbreakable security systems. They used to be married. Now the same corporation wants to employ them both. It has a problem, a mad computer genius has transferred his mind into the mainframe. This is not good for sales.
Used availability for Margaret Allan 2's Dreams of Flesh and Sand
April 1988 : USA Mass Market Paperback