The epic conclusion to the two-part battle with Grodd is at the heart of Attack on Central City.
When Grodd (voiced by David Sobolov) and his army of gorillas bring the battle to Earth-1, The Flash (Grant Gustin) and team must find a way to stop them before they destroy Central City.
Gypsy (guest star Jessica Camacho) returns to join the fight. Meanwhile, Jesse Quick (guest star Violett Beane) decides she wants to stay with Wally (Keiynan Lonsdale) on Earth-1.
Dermott Downs directed the episode with story by Todd Helbing and teleplay by Benjamin Raab & Deric A. Hughes.
Series: The Flash Season 3 Episode 14
Airdate: 28 February 2017 at 8.00pm on The CW