Watch 90210 S01E19
Okaeri, Donna!
Kelly and Silver are shocked when Donna arrives in town. Annie and Dixon take a road trip to visit someone from Dixon's past while Ethan spends his spring break working for Habitat for Humanity. Naomi also decides to work for Habitat when she learns that Liam will be there.. You can watch 90210 S01E19 here.
Air date: April 14, 2009 on The CW at 8:00 PM
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Watch 90210 S01E20 - Between a Sign and a Hard Place
Season 1 Episode 20
Air date: April 21, 2009 on The CW