Ep 21. Harry and the Harrisons

Harry and the Harrisons is the twenty-first episode of the fourth season of the popular superhero show, The Flash. The episode, which originally aired on May 8th, 2018, was directed by Kevin Smith and written by Judalina Neira and Lauren Certo.

The episode begins with the team at S.T.A.R. Labs trying to figure out how to stop the Thinker, who has gained the powers of all the bus metas. Harry is still dealing with his reduced intelligence due to the use of his thinking cap and is feeling useless. To boost his morale, Cisco and Caitlin bring in a few versions of the Harrison Wells from other Earths to help them out.

As the team discusses their plan of action, they realize that the Thinker has been using the powers of the bus metas to create the Enlightenment, a device that can transfer his consciousness to every human being in the world. The Enlightenment is set to happen in just a few hours, and the team must act quickly to stop it.

Meanwhile, Harry and the other Harrisons are trying to come up with an idea on how to restore Harry's intelligence. They manage to build a new thinking cap, but it requires dark matter to work. Cisco and Harry decide to get the dark matter from the Flash Museum, where they discover that the museum's curator, Clifford DeVoe, is actually the Thinker in disguise.

As the team works on stopping the Enlightenment, Harry uses the new thinking cap and regains his intelligence. However, the newly restored Harry is more emotional than the others, and he ends up getting into an argument with Cisco. Cisco insists that they need to use a weapon to stop the Thinker, while Harry believes that they need to appeal to DeVoe's humanity.

In the end, the team manages to track down the location of the Enlightenment and head there to stop it. During the fight, they manage to separate the Thinker's consciousness from his body and trap him inside the consciousness of Ralph Dibny, a former bus meta. However, the cost of the battle is high, and the team loses a member in the process.

Back at S.T.A.R. Labs, the team mourns their loss and begins to move on. Harry says his goodbyes to the other Harrisons and decides to return to his Earth. However, he leaves behind a new thinking cap that he created, which will help the team in their future battles.

Overall, Harry and the Harrisons is an action-packed episode with plenty of twists and turns. It highlights the importance of teamwork and the power of intelligence and emotion in the face of adversity.