On The Flash Season 7 Episode 4 – “Central City Strong”, the Flash must deal with Abra Kadabra’s sudden return to Central City. The villain is back with a vengeance and a score to settle. Meanwhile, Allegra deals with a tricky situation and Caitlin suspects something is off with Frost. Iris is forced to look at a dark moment in her past. You can watch the full episode by clicking the red button below.