1. "The Huntress Returns," 1.17
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. Wednesday, March 20 at 8/7c on The CW.