Plot: Accompanied by MacDuff, Dirk returns to St Cedd's Institute of Science and Technology, Cambridge, from which he had been expelled for cheating, as his former mentor Professor Jericho has asked for his help in guarding Elaine, a sophisticated robot named after his daughter, used in his research into artificial intelligence. When Elaine is stolen, Dirk investigates seeing Jericho's colleague Emelda as the prime suspect