Episode 1 | The Man Who Saved Central City

Still feeling responsible for Eddie's death, Barry pushes his friends away and tries to protect the city on his own; Cisco assists Joe with the Meta Task Force.

Episode 2 | Flash of Two Worlds

A mysterious man brings warning of an evil speedster intent on destroying The Flash, and a determined officer wants to join Joe's meta-human task force.

Episode 3 | Family of Rogues

Barry and the team ally with the kidnapped Captain Cold's sister, but Barry feels duped when he learns Snart is working on something with his father; Joe faces a difficult decision.

Episode 4 | The Fury of Firestorm

The quest to find the destabilizing Dr. Stein a new merge partner brings about the emergence of a new, hot-tempered, meta-human malcontent.

Episode 5 | The Darkness and the Light

As an encounter with another Earth-2 meta-human leaves Barry blinded (right before his first date with Patty), Dr. Wells outs Cisco.

Episode 6 | Enter Zoom

Barry and his team plan to trap Zoom with Linda's help while Joe is against it.

Episode 7 | Gorilla Warfare

Barry's team races to rescue Caitlin when Grodd abducts her; Cisco plans a date with the new barista at Jitters; Patty knows Barry is hiding something.

Episode 8 | Legends of Today

When Vandal Savage attacks Kendra Saunders, Barry takes Kendra to Star City, seeking Oliver's protection; Harrison asks Jay to test a new serum to make Barry run faster.

Episode 9 | Running to Stand Still

Believing Flash to be weakened, Weather Wizard returns to break Captain Cold and The Trickster out of Iron Heights Prison to form a triumvirate against him at Christmastime.

Episode 10 | Potential Energy

Barry and the S.T.A.R. Labs team hunt down The Turtle, who steals kinetic energy. Barry faces a choice on whether or not he should reveal his secret identity to Patty.

Episode 11 | The Reverse-Flash Returns

Dr. Wells figures out how to induce Cisco's ability; they hence learn that Eobard Thawne is still alive. Iris says farewell to her mother. Patty realizes there's more to Barry than meets the eye.

Episode 12 | Fast Lane

Barry tries to team up with Dr. Harrison but finds out Harrison prefers working alone. The Flash fights a new meta-human. Iris researches her brother's drag racing. Dr. Harrison starts stealing Barry's speed.

Episode 13 | Welcome to Earth-2

Harrison, Cisco and Barry travel to Earth-2 to save Harrison's daughter. Barry assumes the role of his doppelganger, who's married to Iris. He then encounters alternate-Caitlin and alternate-Ronnie, who are Zoom's agents.

Episode 14 | Escape from Earth-2

On Earth-2, the team asks for help from an unexpected source to find Zoom's lair, while on Earth-1, Caitlin tries to perfect Velocity-9 so Jay can stop the Geomancer.

Episode 15 | King Shark

When King Shark escapes from an A.R.G.U.S. holding tank, Lyla and Diggle travel to Central City to warn The Flash. King Shark shows up at the West house and attacks Joe, Iris, Wally and Barry.

Episode 16 | Trajectory

While The Flash gets blamed for a lady speedster's anti-social antics, Jesse becomes appalled at how far Harrison will go to protect her.

Episode 17 | Flash Back

To become fast enough to beat Zoom, Barry travels back in time to consult with Dr. Wells/Eobard Thawne but incurs the wrath of a Time Wraith.

Episode 18 | Versus Zoom

Barry, having now learned how to travel between the different Earths, decides to take the fight to Zoom.

Episode 19 | Back to Normal

As Barry adjusts to life without superpowers, a super-strong meta-human abducts Harrison, and Wally pesters Joe for a meeting with The Flash.

Episode 20 | Rupture

Just as Wells comes up with a plan to defeat Zoom, Zoom returns hellbent on destroying Central City. Meanwhile, Cisco has a vision of his brother, and Iris comes to terms with her feelings.

Episode 21 | The Runaway Dinosaur

Iris volunteers to act as the bait in a plan to trap Girder in S.T.A.R. Labs; Barry struggles to go back to his old life.

Episode 22 | Invincible

Zoom unleashes an army of Earth-2 meta-humans, the leader of which is Black Canary's doppelganger, Black Siren; Joe worries when Wally goes out to help The Flash.

Episode 23 | The Race of His Life

With Zoom's true plan revealed, Team Flash fears Barry's resolve to do whatever it takes to stop him.