S4·E18 A Word to the Wise
Aired February 13, 1986
Synopsis
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.