Sean Faris is sinking his teeth into Supernatural: Tribes.

The actor, best known for his recurring role of Office Holbrook on Pretty Little Liars, has been tapped to portray Julian Durant on The CW's planned Supernatural spinoff.

This character is a werewolf and the son of a rich family of lycanthropes, folks possess no love for the shapeshifting Hayden clan that also resides in Chicago.

Supernatural: Tribes will tell the story of dueling monster families in The Windy City who  - unbeknownst to humans - essentially run the town.

Nathaniel Buzolic (The Originals) is on board as shapeshifter David Hayden, while Lucien Laviscount (Episodes, Skins) will play a police academy train seeking to avenge his fiancee's death.

Faris, Buzolic and Laviscount will all appear on Supernatural Season 9 Episode 20, which will serve as the spinoff's backdoor pilot.

Upcoming Spinoffs: Which Has You Most Excited?

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Matt Richenthal is the Editor in Chief of TV Fanatic. Follow him on Twitter and on Google+.