Watch 90210 Season 1 Episode 23 online

West Bev's Hollywood-themed prom is full of surprises, but first Harry warns his students that any non-school sponsored parties after the prom will be met with serious consequences and the school is giving them zero tolerance on that. Naomi learns that Jen has maxed out her credit card to furnish their new home, but soon forgets her problems when Liam asks her to the prom. Meanwhile, Liam continues to count down the moments until Annie shows her true colors, but to prove him wrong, she accepts theater-geek Charlie's invitation to the dance and eventually hurts him just like what Liam wanted Annie to do. Kelly attempts to warn Ryan about Jen's devious personality, which he interprets as Kelly

•  Season 1, Episode 21 : The Dionysian Debacle04/28/2009  
•  Season 1, Episode 22 : The Party’s Over05/05/2009  
•  Season 1, Episode 23 : Zero Tolerance05/12/2009  
•  Season 1, Episode 24 : One Party Can Ruin Your Whole Summer05/19/2009  
•  Season 2 episode 1 : To New Beginnings!09/08/2009