Arrow has found its Talia al Ghul.
Continuum actress Lexa Doig has bee tapped to play the role for the show's current fifth season.
Doig (Continuum, Stargate SG-1) has been cast in the major recurring role of the half-sister of Nyssa (Katrina Law). Described as "worldly and cultured, an elite warrior who doesn't pick sides but rather creates her own," Talia is an expert hand-to-hand fighter, extremely well-trained in most weapons and highly intelligent. She will first appear in episode 10 and will recur in multiple episodes this season.
Doig joins previously cast Juliana Harkavy (The Walking Dead) who will play Tina Boland, a former detective of Cetral City PD who is not impressed by masked vigilantes like the Green Arrow.
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