Actors Michael Ansara (Merle Frome), Leonard Nimoy (Ben Frome) and episode writer Gene L. Coon all went on to prominence in the original "Star Trek" TV series: Ansara appeared as Kang, a Klingon commander who he later reprised on "Star Trek: Deep Space Nine"; Nimoy starred as iconic Vulcan Spock in the series and throughout the franchise of movies and spin-offs; and Coon was an executive producer and featured writer for the run of the series.