Contents

Preface.. 4

The Nonmetallic Isaac or It’s a Wonderful Life.. 5

Strip-Runner. 8

The Asenion Solution.. 34

Murder in the Urth Degree.. 46

Trantor Falls. 60

Dilemma.. 75

Maureen Birnbaum After Dark.. 90

Balance.. 105

The Present Eternal. 109

PAPPI. 117

The Reunion at the Mile-High.. 133

Plato’s Cave.. 143

Foundation’s Conscience.. 167

Carhunters of the  Concrete Prairie.. 173

The Overheard Conversation.. 211

Blot. 217

The Fourth Law of Robotics. 238

The Originist. 249

A Word or Two from Janet. 308

Fifty Years. 310