The character "Mark Slate" originally appeared in the second season of The Man From U.N.C.L.E. in "The Moonglow Affair", and was originally played by Norman Fell. Noel Harrison took over the role when the The Girl from U.N.C.L.E. (1966) series took off.
"Galatea" is the name of the statue created in Greek mythology by Pygmalion. "Pygmalion" is the play by George Bernard Shaw upon which "My Fair Lady" was based. Rex Harrison, father of guest star Noel, starred in stage and screen versions of MFL. The plot of MFL, which revolves around making an ordinary flower girl into a refined lady, mirrors the plot of this episode. In addition, one of MFL's most famous lines (the elocution lesson's "The rain in Spain stays mainly in the plain") is mirrored in this episode's elocution lesson's "The police in Greece are difficult to fleece."
One of the rare times when Leo G. Carroll does not receive third billing. Guest Noel Harrison is listed third.
The outdoor set for the Baron's home is the same one used for the second season story, "The Round Table Affair".
In Act III, Mark Slate drives a red Sunbeam Tiger roadster. This is the same car which Maxwell Smart drives in Get Smart (1965), which was also running on NBC that year.