Endora implies that she knew Helen of Troy in this episode. The comment may have been facetious, and Helen herself may never have existed - a lot of what happened around the Trojan War is uncertain, including whether the story is even based on a real event. BUT, if Troy and Helen existed as scholars tentatively now believe, Endora would have to be at least 3100 years old to have met Helen.

Clever use of makeup, a voice filter, and Elizabeth Montgomery's ability to imitate the "Endora" mannerisms of Agnes Moorehead make it clear who is who at all times.