Revealing: Every time the villains' deadly gas, "hydro," is mentioned, the word is badly and very obviously dubbed in, and doesn't match what the actors' lips are saying. This occurred because the original name used, "freon," turned out to be an existing (and patented) refrigerant gas, so the name had to be changed to avoid a trademark lawsuit. Submitted by Jean G

Revealing: Here, in the opening scenes at U.N.C.L.E. headquarters, as well as in a number of other first season episodes, the unmarried Illya is inexplicably wearing a wedding ring. Submitted by Jean G