The Flash 2×10 Extended Promo “Potential Energy” The Flash 2×10 “Potential Energy” – A moment of truth a minute too late. All-new episodes of The Flash return Tuesday January 19th on The CW! Show More… 219 Comments Related Videos The Fosters 4×01 Sneak Peek #3 “Potential Energy” (HD) The Fosters 4×01 Sneak Peek #2 “Potential Energy” (HD) The Fosters 4×01 Sneak Peek “Potential Energy” (HD) The Flash Season 2 “Everything Will Change” Promo (HD)