The Flash 3×23 Extended Promo “Finish Line” Season 3 Episode 23 Extended Promo Season Finale

The Flash 3×23 “Finish Line” Season 3 Episode 23 Extended Promo (Season Finale) – SEASON FINALE – With nothing left to lose, Barry (Grant Gustin) takes on Savitar in an epic conclusion to season three. David McWhirter directed the episode written by Aaron Helbing & Todd Helbing (#323). Original airdate 5/23/2017.