Danielle Nicolet as District Attorney Cecile Horton.

Violett Beane as Jesse Wells/Jesse Quick.

Todd Lasance as Edward Clariss/The Rival.

Michelle Harrison as Nora Allen and the Speed Force.

Martin as Detective Joe West and Digsy Foss Harrison 'Harry' Wells, Hells Wells, Harrison Wells (Earth-TUD2), Harrison Wells (Earth-17) and Iris West

Tom Cavanagh as Harrison 'H.R.' Wells, Dr.

Keiynan Lonsdale as Wally West/Kid Flash.

Carlos Valdes as Cisco Ramon/Vibe and Pablo.

Candice Patton as Iris West, Millie Foss, and Harrison 'H.R.' Wells.

Grant Gustin as Barry Allen/The Flash/Savitar.

But unable to celebrate victory, Barry makes a world-shaking decision and speeds back in time to the night his mother died to stop Reverse Flash from killing her, irrevocably changing his past and redetermining his future. In the race of his life, Barry ultimately gets the upper hand against Zoom and defeats his nemesis. but when Zoom kills Henry before BarryвЂ™s eyes, BarryвЂ™s newfound stability is shattered.Д«linded by anger, Barry unwittingly plays into ZoomвЂ™s game and uncovers the evil speedsterвЂ™s true goal: to destroy all Earths in the multiverse. He finds some solace in the companionship of his father, Henry Allen, who was freed from a wrongful life sentence. As Barry struggles to juggle life as a hero, he opens his heart to Patty Spivot ( Shantel VanSanten), a spunky detective paired with Joe West, but realizes just how hard it is to find happiness when the lives of everyone you love are at stake. Meanwhile, Cisco discovers that he, too, was affected by the dark matter of the Particle Accelerator and must come to terms with his newfound powers. As Zoom sends an army of Earth-Two meta-humans to Earth-1 to defeat Barry, he receives unexpected assistance from the Earth-Two doppelganger of his former mentor, Harrison Wells. With this team, Barry was finally able to defeat the Man in Yellow, aka The Reverse Flash, but in their epic battle, a Singularity was ripped in space and time that threatened to destroy them all.ДЄfter successfully closing the Singularity from destroying Central City, Barry thinks heвЂ™s seen the worstвЂ¦ but the arrival of Jay Garrick ( Teddy Sears) reveals that the Singularity actually opened portals to an alternate Earth, known as Earth-2, which is being terrorized by a formidable evil speedster named Zoom. Harrison Wells ( Tom Cavanagh), Barry began a journey as The Flash to protect the people of Central City from these powerful new threats. With the help of his scientist friends at S.T.A.R Labs, Caitlin Snow ( Danielle Panabaker), Cisco Ramon ( Carlos Valdes), and Dr. The dark matter also created meta-humans, many of whom have wreaked havoc with their powers on the city.

But Barry wasnвЂ™t the only person who was given extraordinary abilities that night.

Labs particle accelerator exploded, creating a dark matter lightning storm that struck Barry, bestowing him with superspeed and making him the fastest man alive. Joe adopted Barry fifteen years ago after BarryвЂ™s mother was murdered and BarryвЂ™s father, Henry Allen, received a life sentence for the crime вЂ“ though Barry always maintained that a mysterious 'Man in Yellow' was responsible. He was secretly in love with his best friend, Iris West ( Candice Patton), daughter of BarryвЂ™s surrogate father, Detective Joe West ( Jesse L. Synopsis Until recently, 26 year-old Barry Allen ( Grant Gustin) lived a normal life as a perpetually tardy C.S.I.

The flash season 3 episode 19 promo