"The Flash" Season 3, Episode 3, "Magenta," follows Barry Allen confronting a magnet-manipulating metahuman, Frankie Kane, who was activated by Doctor Alchemy. The episode features the return of Harry and Jesse Wells from Earth-2, with Jesse embracing her speedster abilities while Wally West navigates jealousy and risk-taking. Read a detailed breakdown of the episode on Rotten Tomatoes . "The Flash" Magenta (TV Episode 2016) - IMDb