Extended trailer for Arrow mid-season premiere, plus CW sizzle reel The CW has released an extended trailer for the mid-season premieres of Arrow along with a sizzle reel for their full mid-season slate. Check them both out in the players below! Titled “Who Are You?” Episode 5.10 of Arrow is set to premiere Wednesday, January 25 and is officially described as follows: “Worried that Prometheus is right and he is truly a killer at heart, Oliver looks for any ray of hope and finds it in what seems to be the miraculous return of Laurel Lance (guest star Katie Cassidy).