In the early days of the series, the show featured often incoherent scripts, along with jarring plot shifts to old Western films. This led to derision of the show by the critics of the day, although it always was wildly popular with kids and many adults. This improved after 1952 when scripts began being written by such major science fiction writers active at the time as Damon Knight, James Blish, Jack Vance, and Arthur C. Clarke. These late scripts displayed more intelligence, discipline and imagination than most of the other children's sci-fi series scripts of the era. Other well-known authors who occasionally wrote for the program included Isaac Asimov, Cyril M. Kornbluth, Milt Lesser, Walter M. Miller, Jr., Robert Sheckley, J. T. McIntosh, and Robert S. Richardson. One of the more prolific writers for the show was Maurice C. Brachhausen—who wrote under the name M.C. Brock, and later had his own production company, Brock Video Productions.
