King Shark escaped from A.R.G.U.S. custody and was hell-bent on killing The Flash (Grant Gustin). Diggle and Lyla asked Barry for help to track the humanoid shark-monster and stop him for good. King Shark turned up at Joe’s (Jesse L. Martin) house and attempted to attack Barry.
Eventually the team tricked King Shark into a trap and Barry created an electrified underwater cyclone that allowed A.R.G.U.S. to capture him again.
Elsewhere in the episode Barry vowed to go back to Earth-2 to stop Zoom, and Zoom took off his mask revealing that it was Jay (Teddy Sears) underneath it.
The next episode of the season is Trajectory. Barry runs into a fellow speedster who is up to no good. Meanwhile, sparks begin to fly between Iris and her new boss.
Tune in to Sky 1 HD at 8pm on Tuesday to see the episode. Preview it with our gallery below:
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