Supergirl Boss Previews a 'Lot More' Sister Scenes, Reign's Rise, Lena's Foe and One 'Raw, Amazing' Episode

Season 3 of The CW’s Supergirl is readying for takeoff (tonight at 8/7c), but before you reconnect with Kara, Alex, J’onn et al, there are just a few more things showrunner Andrew Kreisberg wants you to know. TVLine hopped on the phone with the EP to get his latest