The Vampire Diaries Casts Smallville's Cassidy Freeman

Cassidy Freeman is returning to The CW.

The Smallville alum has booked a guest-spot on The Vampire Diaries, TVGuide.com has confirmed. Freeman, who portrayed sometimes villain Tess Mercer on the recently ended super series, will play Vampire Diaries' Sage, a character seen in 1920s flashbacks. Her allure is felt by both the Salvatore brothers and the Original family.

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Freeman next appears in A&E's new series Longmire. She'll make her Vampire Diaries debut in Episode 16, and she has the potential to recur.

TVLine.com first reported the news.

The Vampire Diaries airs Thursdays at 8/7c on The CW.