The Keaton family fills in his girlfriend, Ellen, on some of the more humorous events in Alex's life before they met in this special one-hour episode.
Flashbacks to previous episodes include some highlights from the series' past shows.
Alex and Ellen celebrate their six-month anniversary as boyfriend and girlfriend, and the family think it's time for Ellen to know the truth about Alex.
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Ready to Watch Family Ties, Season 4, Episode 18?