Having been born on October 16, 1879, Clem Bevans (Pete) was the earliest-born actor to appear on the series. This was also his final credited role.
Another episode where the Twilight zone benefited from MGM's large amount of stock props. The domed device on the alien craft is the 'astrogator' from Forbidden Planet (1956). The cruiser C-57-D's steps are also used in the ship.
At 21:20 the console seen on the alien spacecraft is the same one used at times in The Man from U.N.C.L.E. (1964)'s headquarters as Mr. Waverly's overseas relay communicator console.