Because of a lawsuit, this episode was not included in the syndication package for The Twilight Zone. It was finally re-aired in 1984 as "The Miniature" (see Alternate Versions).
Actress Claire Griswold, who plays "The Doll," was the wife of Oscar®-winning director, producer and actor Sydney Pollack. The couple was married for 50 years, from 1958 to Pollack's death in 2008.
When this episode was rebroadcast for the first time in 1984 as part of the "Twilight Zone Silver Anniversary Special" portions of it were colorized for the rebroadcast.
Despite the disorder not being known in the US at the time, Charley displays an array of classic symptoms of Asperger's Syndrome, an autistic spectrum disorder not identified in the English-speaking world until Hans Asperger's original paper was translated into English and published in 1991.
The keyboard music being played by the doll figurine is the theme from the first movement (Andante grazioso) of Wolfgang Amadeus Mozart's Piano Concerto No. 11 in A minor, K331, published in 1784. Although performed on harpsichord on the soundtrack, the Sonata was in fact composed for the fortepiano, the forerunner of the modern piano. The third movement of this famous sonata, "Alla turca --- allegretto," one of Mozart's most widely recognized compositions, is popularly known as the "Rondo Alla Turca."