Dr. Wells' former protégé, Hartley Rathaway, returns to seek revenge on his mentor. Meanwhile, Iris is hired as a cub reporter; Cisco recalls his first day on the job at S.T.A.R. Labs; and Joe asks Eddie for a favor but asks him to keep it a secret from Barry.
Genres: Drama , Sci-Fi & Fantasy
Keywords: based-on-comic , masked-superhero , speed , super-power , superhero , supervillain , watch-series-online