The CW released a preview for the next episode of Arrow, "Heir To The Demon," which features Katrina Law as Nyssa al Ghul.
As Laurel continues to unravel, Oliver and Lance try to convince Sara (guest star Caity Lotz) to stay in Starling City and finally reunite with Laurel and Dinah (guest star Alex Kingston). However, Sara’s fellow League of Assassins member, Nyssa (guest star Katrina Law, “Spartacus”), comes to bring Sara back to the fold, but when Sara refuses, Nyssa kidnaps Dinah. Realizing she’s putting her family in danger by staying in town, Sara considers re-joining the league.
Arrow airs Wendesdays at 8pm ET on the CW.