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90210 -- " The Empire State Strikes Back" -- Image: NO519a_0152 --Pictured (L-R): Matt Lanter as Liam and Marie Avgeropoulos as Cassie -- Photo: Scott Humbert/The CW -- © 2013 The CW Network. All Rights Reserved

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90210 -- " The Empire State Strikes Back" -- Image: NO519a_0184 -- Pictured (L-R): Michael Steger as Navid, Matt Lanter as Liam, and Marie Avgeropoulos as Cassie -- Photo: Scott Humbert/The CW -- © 2013 The CW Network. All Rights Reserved

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90210 -- " The Empire State Strikes Back" -- Image: NO519a_0191 -- Pictured (L-R): Michael Steger as Navid and Jessica Lowndes as Adrianna -- Photo: Scott Humbert/The CW -- © 2013 The CW Network. All Rights Reserved

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90210 -- " The Empire State Strikes Back" -- Image: NO519b_0102 -- Pictured (L-R): Keke Palmer as Elizabeth, Robin Givens as Cheryl, Robbie Jones as Jordan, Jessica Stroup as Silver, Shenae Grimes as Annie, and AnnaLynne McCord as Naomi -- Photo: Scott Humbert/The CW -- © 2013 The CW Network. All Rights Reserved

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90210 -- " The Empire State Strikes Back" -- Image: NO519b_0132 -- Pictured (L-R): Jessica Stroup as Silver, Shenae Grimes as Annie, and AnnaLynne McCord as Naomi -- Photo: Scott Humbert/The CW -- © 2013 The CW Network. All Rights Reserved

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90210 -- " The Empire State Strikes Back" -- Image: NO519b_0187 -- Pictured (L-R): Robbie Jones as Jordan, Jessica Stroup as Silver and AnnaLynne McCord as Naomi -- Photo: Scott Humbert/The CW -- © 2013 The CW Network. All Rights Reserved