Alcoa Presents: One Step Beyond is an American anthology series created by Merwin Gerard. The original series ran for three seasons on ABC from January 1959 to July 1961.

Four explorers are summoned to Peru by the brilliant physicist Dr Thorkel. They discover a rich source of radium and a half-mad Thorkel who shrinks them down to one-fifth their normal size when they threaten to stop his unorthodox experimentation.