"Adventures in time and space...told in future tense..." was famous narrator Norman Rose's opening to the radio show with some of radio's earliest science fiction, adapted from masters of the genre.

Dimension X was one of radio's first adult science fiction series, and made its mark by adapting short stories by acknowledged masters in the field, including Isaac Asimov, Clifford D. Simak, and William Tenn. Scriptwriters Ernest Kinoy and George Lefferts, who also contributed their own original scripts, adapted the original stories.

At the start of every broadcast, host Norman Rose promised us "adventures in time and space, told in future tense" and you knew you were about to be transported from your everyday existence to somewhere completely different - maybe even a distant planet. Radio was a fertile medium for science fiction. It was easy to visit other planets, interact with aliens, or fly in a rocket ship simply by using your imagination. Dimension X debuted April 8, 1950, and completed its broadcast run September 29, 1951.

Included here are the following episodes: "A Logic Named Joe" by Murray Leinster, with Joseph Julian and Roger DeKoven (07/01/1950), "The Man in the Moon" by George Lefferts, with Luis van Rooten and Santos Ortega (07/14/1950), "The Potters of Firsk" by Jack Vance, with Karl Weber and Raymond Edward Johnson (07/28/1950) , "Pyrigi's Wonderful Dolls" by George Lefferts, with Les Damon and Joan Alexander (08/04/1950), "The Castaways" by Ernest Kinoy and George Lefferts, with Santos Ortega and Gregory Morton (08/11/1950), "Dr. Grimshaw's Sanitorium" by Fletcher Pratt, with Karl Weber and Roger DeKoven (09/22/1950), "Shanghaied" by Ernest Kinoy, with Leon Janney and John Sylvester (11/12/1950), "The Last Objective" by Paul Carter, with Lawson Zerbe and Ralph Bell (06/03/1951), "Nightmare" by Stephen Vincent Benét, with Joseph Julian and Joe DeSantis (06/10/1951), "Pebble in the Sky" by Isaac Asimov, with Santos Ortega and Susan Douglas (06/17/1951), "Child's Play" by William Tenn, with Karl Weber and Leon Janney (06/24/1951), and "Courtesy" by Clifford Simak, with Lawson Zerbe and William Zuckert (07/26/1951).