The CW has released the promo for the mid-season finale of ‘Supergirl‘ titled, ‘Reign‘. This seasons titular villain is in full effect as the evil Kryptonion World Killer. Check out the promo below and share your thoughts AFTER THE JUMP. Supergirl airs Monday evenings at 7pm Central on The CW. “Supergirl (Melissa Benoist) investigates a mysterious symbol popping up all over National City, tracing its origins back to an ancient prophecy and the mark of the World Killer, Reign (Odetee Annable). Meanwhile, the tension between Lena (Katie McGrath) and Morgan…
