'Melrose Place': Jessica Lucas is going to tear Katie Cassidy's hair out

She played an undercover cop who dated Ryan Matthews on "90210" this past year, but she's assumed a whole different persona for The CW's remake of "Melrose Place" (which debuts Tuesday, don't forget).

Yes, Jessica Lucas shall heretofore be known as "Riley," a sweet, young teacher who's engaged to a sweet, young aspiring filmmaker and who will most likely wipe the floor with Katie Cassidy before season's end.

Sounds pretty good, no? We're talking all about it...

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