The Flash season 3 returns from a brief hiatus with a two-part episode where Barry Allen, Cisco Ramon, Caitlin Snow and Julian Albert travel to Gorilla City to save Harrison Wells from telepathic ape Grodd.

Click here to watch The Flash season 3 live via The CW app. You can also watch the episode online by clicking here (only in the US).

Episode 13 is titled, Attack On Gorilla City, which will air on 21 February at 8 pm EST on The CW Network. Executive Producer Aaron Helbing previews a Flash vs Gorilla fight in the latest promo for the episode. He said. "The name of episode 13 is Attack On Gorilla City. Her [Jesse] father Harry Wells went to Gorilla City and he is missing in action. So she is hoping that the team can come with her and help save her father."

The producer explained what to expect in the chapter and said, "Barry, Cisco, Caitlin, and Julian go to Earth 2, and while they are going through the forest Grodd appears and captured and now they are stuck in these Gorillas City cells, unable to escape, with Grodd dampening their powers."

Helbing concluded by teasing a Speedster- Gorilla fight scene. "So we get to do a Flash gladiator fight in an arena full of screaming gorillas. It might be the greatest thing I have ever seen on Television." The promo also features a captured Cisco saying, "Speedster vs Super Gorilla: Best worst video game ever!"

The official synopsis for the chapter reads as follows:

When Jesse Quick (guest star Violett Beane) informs the team that her father (Tom Cavanagh) has been abducted, Barry (Grant Gustin), Caitlin (Danielle Panabaker), Cisco (Carlos Valdes) and Julian (Tom Felton) voyage to Earth-2 on a rescue mission to save Harry from Gorilla City. As they trek through the forest, Barry and the team are immediately captured and brought to Grodd (voiced by David Sobolov). Grodd tells them he needs their help to stop Solovar (voiced by Keith David), the leader of Gorilla City, as Solovar wants to invade Earth-1. Meanwhile, back on Earth-1, Jesse and Kid Flash (Keiynan Lonsdale) hit the streets to stop a metahuman that can control gravity, with H.R. and Joe (Jesse L. Martin) guiding them from S.T.A.R. Labs.