The Flash Brings Back Fan-Favorite Villain

CBR

By Meagan Damore

Published May 10, 2017

In Cause and Effect, The Flash discovered an unlikely power source, which happens to be guarded by this fan-favorite villain.

SPOILER WARNING: This article contains major spoilers for "Cause and Effect," the latest episode of "The Flash."

King Shark is back, baby! In "Cause and Effect," the latest episode of "The Flash," Team Flash realized that they needed a source of incredible power. Unfortunately, the only power source that strong is being guarded under the watchful eye of King Shark himself.

While Team Flash struggled with Barry's accidental amnesia, newcomer Tracy Brand continued to work on her Speed Force prison for Savitar. By the end of the episode, she developed a key component of her greatest invention: the Speed Force bazooka. However, the Speed Force bazooka -- so named thanks to Harrison Wells -- needs an incredible amount of power in order to operate. In fact, when she admitted how much power it would take, Cisco pointed out that they needed something that generates more power than the sun.

The good news? Such a power source does indeed exist. The bad news? It's currently in King Shark's possession. Team Flash is looking for the mind-controlling device left behind by the Dominators in The CW's four-show crossover, but it's under lock and key. The stinger at the end of the episode showed that it was locked up in what appears to be an underground vault, with King Shark standing guard outside.

In order to steal the Dominators' device back, Barry will enlist Captain Cold's help in the next episode, which is titled “Infantino Street.” The promo for the penultimate episode appears to show Barry going back in time to recruit Cold for their cause, since Cold sacrificed his life to save his time in "DC's Legends of Tomorrow."

Since the amnesia experiment went wrong and time continues to run out for Iris, Barry doesn't have very many options left. Though Savitar was revealed to be a time remnant of Barry, he is hellbent on killing Iris so that he will be created in the future. Barry's amnesia was able to suspend Savitar's plans, but -- since Barry regained those memories -- Savitar is back on track.

Starring Grant Gustin as the Scarlet Speedster, “The Flash” airs Tuesdays at 8 pm ET/PT on The CW. The series also stars Jesse L. Martin, Tom Cavanagh, Carlos Valdes, Candice Patton, Danielle Panabaker, Keiynan Lonsdale and more.