Part 4/8:
Discovering the Past
Barry, assisted by Cisco, dives into King Shark's history. They learn that Shea was a marine biologist who underwent a ghastly transformation following an accident involving a particle accelerator. Driven to find the origins of Shea’s powers, Cisco's visit to Tanya, Shea's ex-wife, yields vital information about the transformation and its repercussions on Shea's cellular structure. Meanwhile, Barry patrols the waterfront, searching for signs of King Shark's next move.