Denise Crosby, whose character Tasha Yar was killed in the first season episode "Skin of Evil", returned in "Yesterday's Enterprise" due to changes to the timeline seen in the series.
Denise Crosby, vars rollfigur Tasha Yar dödades i den första säsongens avsnitt "Skin of Evil", återvände i "Yesterday's Enterprise" på grund av förändringar av seriens tidslinje.