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Caitlin and Cisco analyze Axel’s tech. Cisco notices it’s too sophisticated for a copycat — it mirrors Jesse’s original blueprints exactly. Someone inside S.T.A.R. Labs? No — someone with access to old police evidence lockers. Joe realizes: the missing accomplice was a cop.

The accomplice is revealed as Harold Hadley , a former detective who worked with Joe. Hadley faked his death years ago and has been training Axel. He plans to break Jesse out to execute a final “grand joke”: detonate bombs disguised as charity water bottles across the city.

– In a chilling final scene, Wells watches the Trickster’s broadcast. He smiles. Then he opens a hidden drawer with the yellow suit. A newspaper headline: “FLASH MISSING — 2024.” He whispers to Gideon: “Phase one complete. Soon, the real game begins.” Climax & Cliffhanger Barry saves the police station with milliseconds to spare, phasing through multiple blast doors to remove the bombs. Joe and Barry share a moment — Joe admits he was afraid Barry would die like the partners he lost. Barry says: “I’m not them. I’m faster.”

Joe warns Barry: James Jesse was a master manipulator and a genius chemist. He also reveals that during the original case, Jesse used an accomplice who was never caught — possibly the same person now mentoring Axel. Meanwhile, Iris investigates the story for the CC Citizen, digging into the original Trickster’s cult following.

Barry confronts both Tricksters. James uses a sonic-based joy buzzer that disrupts Barry’s speed equilibrium. Just as Jesse is about to detonate the station remotely, — a callback to his younger self hesitating twenty years ago. He didn’t hesitate this time.

Axel is recaptured; James escapes via a hidden hang glider, laughing: “See you in the sequel, Flash!” Eddie and Iris – Eddie proposes they move in together to escape the shadow of Barry’s secret. Iris agrees, but confesses to Eddie she feels Barry is hiding something huge. Eddie struggles with guilt.