Starring Michael Cudlitz, Shawn Hatosy, Regina King and Ben McKenzie, the show is slated to begin its new season in January.
Liu will appear throughout the season as a member of the Los Angeles Police Department, the cable network said.
Her film credits include the "Kung Fu Panda," "Charlie's Angels" and "Kill Bill" films. She also was a co-star on TV's "Ally McBeal" and "Cashmere Mafia."
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