Here is the promo and Synospis from the next all new Arrow 1×17 The Huntress Returns.
With his nightclub set to open and a new romance brewing with McKenna (guest star Janina Gavankar), Oliver (Stephen Amell) is as happy as he’s been since returning to Starling City. But when Oliver’s ex, The Huntress (guest star Jessica De Gouw), suddenly returns to town, she threatens to destroy everything and everyone he cares about. Meanwhile, Laurel (Katie Cassidy) and her father (Paul Blackthorne) struggle with the return of Dinah Lance (guest star Alex Kingston) who claims she has proof Sara is still alive. Thea (Willa Holland) gets Roy Harper (guest star Colton Haynes) a job at Oliver’s club, but he’s not too inclined to stop his life of crime. Oliver and Tommy (Colin Donnell) are thrilled they were able to get Steve Aoki to play at the opening of their new nightclub, Verdant.