有声读物: Nor Iron Bars A Cage ...

Iron bars do not confine a Man—only his body. There are more subtle, and more confining bindings, however....Police methods of the future will naturally use complex new technology but police will still need to deal with the same old sad human nature, forever doing horrible deeds. The night stick may be replaced by the hypo-gun but is prison the only solution? Listen to this neat story by Randall Garrett and see.