Eliza Dushku joins the cast of 'Bull'

March 24 (UPI) -- Buffy the Vampire Slayer alum Eliza Dushku has joined the cast of Bull, the freshman, legal drama starring Michael Weatherly, CBS announced.

Dushku's first appearance as J.P. Nunnelly, "the savvy head of the best criminal defense firm in New York," will be May 9.

The episode's plotline sees Weatherly's Dr. Jason Bull hire Nunnelly when a member of his Trial Analysis Corporation team faces prison time, the network said in a press release.

Co-starring Freddy Rodriguez, Geneva Carr, Jaime Lee Kirchner, Annabelle Attanasio and Christopher Jackson, Bull is confirmed to return for a second season in 2017-18.

Dushku, 36, is well known for her work in the TV shows Banshee, The Saint, Tru Calling and Dollhouse. Her film credits include Bring It On, True Lies, This Boy's Life, Jay and Silent Bob Strike Back, Wrong Turn, Soul Survivors and That Night.

The actress recently made headlines when she opened up about her past battle with substance abuse.