New York, Harcourt Brace, 1951.. First edition. On the passing of her father, Ellen has inherited a hotel penthouse and a companion named Mikki. But Mikki is a machine, an electronic thinking machine that her late father had envisioned as a source of information open to all. But why is National Sound Inc. claiming to own Mikki? What did Ellen's brother, who died the same night as her father, know about Mikki? What secrets contained in her memory banks are so important? The follow-up to The Big Clock. Near fine in NF dust jacket with just a bit of spotting and pencil marks to the rear panel. A real beauty and an early technological thriller! $75.00.