PROBE
NBC premieres the TV movie/series pilot PROBE, created by Leslie Stevens (The Outer Limits), starring Hugh O’Brian (The Life & Legend Of Wyatt Earp) and Burgess Meredith (Batman, The Twilight Zone), and guest starring Sir John Gielgud. The movie does well with audiences and gets a series pickup, though due to a conflict with a PBS series of the same name, it will be retitled “Search” when it returns on NBC’s fall 1972 TV schedule. 
Hear about it on the Sci-Fi 5 podcast
Rod Serling’s Night Gallery
NBC premieres Rod Serling’s Night Gallery, a TV movie anthology of three original Serling stories, each introduced by Serling himself and starring Joan Crawford, Roddy McDowall, Ossie Davis, Richard Kiley and Tom Bosley. A young Steven Spielberg directs one of the three segments, his second professional directorial credit. Night Gallery will become a series on NBC’s schedule in late 1970.
Star Trek: For The World Is Hollow And I Have Touched The Sky
The 63rd episode of Gene Roddenberry’s science fiction series Star Trek airs on NBC. Kate Woodville and Byron Morrow guest star.