'Crisis on Infinite Earths': Is [Spoiler] Really Dead in the Arrowverse?

Supergirl -- "Crisis on Infinite Earths: Part One" -- Image Number: SPG509b_0123r.jpg -- Pictured (L-R): Chyler Leigh as Alex Danvers, Melissa Benoist as Kara/Supergirl, Elizabeth Tulloch as Lois Lane, Tyler Hoechlin as Clark Kent/Superman, Ruby Rose as Kate Kane/Batwoman, Audrey Marie Anderson as Harbinger, Stephen Amell as Oliver Queen/Green Arrow and Katherine McNamara as Mia -- Photo: Katie Yu/The CW -- © 2019 The CW Network, LLC. All Rights Reserved.