2009 - 90210 - 1x24 - One Party Can Ruin Your Whole Summer
Episode aired 2 July 2009
Adrianna and Navid are forced to make an impromptu exit from the prom when Adrianna goes into labor. Brenda Walsh shows up at the hospital to lend emotional support as Adrianna's labor gets more difficult. Harry and Debbie also turn up at the hospital with Kelly to lend emotional support to Adrianna when she decides to give her baby up for adoption.
Across town, in defiance of Harry's orders not to throw any post-prom party, Naomi and Liam decide to throw a party in Jen's house, which she does not approve of. There, Dixon confronts Ethan about [Erin] Silver when he notices that Ethan might be developing romantic feelings for his girlfriend. When Liam arrives late for the party, Jen takes advantage of his rebellious state. However, Naomi confronts and accuses Annie of seducing her boyfriend. Beaten up and humiliated, Annie leaves the party in a rage.
Later, while driving home, Annie runs over someone with her car in a hit-and-run. Liam later decides to confess that it was Jen who seduced him.
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This is the last appearance of Shannen Doherty, as Brenda Walsh.