![](https://image.tmdb.org/t/p/original/bwUxFTzoDHdqC2impdXMzyhnRMo.jpg)
![](https://image.tmdb.org/t/p/w342/yZevl2vHQgmosfwUdVNzviIfaWS.jpg)
Flash Back
After the shocking revelation that Zoom is Jay Garrick, Barry is more determined than ever to get back to Earth-2 to stop Zoom forever. Desperate to find a way to increase his speed, Barry decides to travel back in time and masquerade as his earlier self in order to get his arch-nemesis, Dr. Harrison Wells/Eobard Thawne, to teach him how to run faster. However, things don’t go as planned and Barry is stunned to face familiar foe Hartley Rathaway, as well as old friend Eddie Thawne. Iris makes peace with her past in order to embrace her future.
Writing:
Stars:
- Geoff Johns
- Greg Berlanti
- Andrew Kreisberg
Stars:
![](https://image.tmdb.org/t/p/w300/jC1KqsFx8ZyqJyQa2Ohi7xgL7XC.jpg)
![](https://image.tmdb.org/t/p/w300/mmxxEpTqVdwBlu5Pii7tbedBkPC.jpg)
![](https://image.tmdb.org/t/p/w300/9NzRllYCJyvn8SUnif6HyHPvLNH.jpg)
![](https://image.tmdb.org/t/p/w300/6ZdQTBy20HzWudZthAV7NkZWfIb.jpg)
Other episodes for this season
![The Man Who Saved Central City](https://image.tmdb.org/t/p/w300/5B43GO09vYgY0vlbahDakyjvqF3.jpg)
![Flash of Two Worlds](https://image.tmdb.org/t/p/w300/qPZEyRCdtpxT57Hj0zggi2qCaml.jpg)
![Family of Rogues](https://image.tmdb.org/t/p/w300/cUlJOXLl2NqncKntf7G76rH7iyT.jpg)
![The Fury of Firestorm](https://image.tmdb.org/t/p/w300/7mwmxIbx4ZFWbh6LV5wxL9SZwO.jpg)
![The Darkness and the Light](https://image.tmdb.org/t/p/w300/cZUss7jKsQ4caGSWQHWyIHNX7vY.jpg)
![Enter Zoom](https://image.tmdb.org/t/p/w300/5KV67qcPV3mxMSY8flnTbdCWiWt.jpg)
![Gorilla Warfare](https://image.tmdb.org/t/p/w300/cv2xltOhRaYMhllbE2b8OlWASbl.jpg)
![Legends of Today (I)](https://image.tmdb.org/t/p/w300/2SmtITUJqvHNhEzNKsbbr3Qd15f.jpg)
![Running to Stand Still](https://image.tmdb.org/t/p/w300/hh7YC7hi67eMWcbWc05KirCo917.jpg)
![Potential Energy](https://image.tmdb.org/t/p/w300/u2rCTzwDf6ePfZ0kBIwTmrNl5rK.jpg)
![The Reverse-Flash Returns](https://image.tmdb.org/t/p/w300/gpjOWmxlz7PzhrM65TwO9dKswlK.jpg)
![Fast Lane](https://image.tmdb.org/t/p/w300/wwmmhrbZ4JEctNeXdN3oarQUpXA.jpg)
![Welcome to Earth-2](https://image.tmdb.org/t/p/w300/sdIU4knF5Qk2hxTXlKtE0aeC779.jpg)
![Escape from Earth-2](https://image.tmdb.org/t/p/w300/eLSoqOZD7w5CesLrCyxDOTqVBDi.jpg)
![King Shark](https://image.tmdb.org/t/p/w300/pZpBABUF1rJAllxEsUOtAECZMVp.jpg)
![Trajectory](https://image.tmdb.org/t/p/w300/8qbMUBHTmhXRMwVgSdikrvRhGjp.jpg)
![Flash Back](https://image.tmdb.org/t/p/w300/bwUxFTzoDHdqC2impdXMzyhnRMo.jpg)
![Versus Zoom](https://image.tmdb.org/t/p/w300/8GwfGFbc1HMYEM6YeIzsJoUZ78h.jpg)
![Back to Normal](https://image.tmdb.org/t/p/w300/t2jRTxY0lu6ZOJ0Rtiea6zRUTV4.jpg)
![Rupture](https://image.tmdb.org/t/p/w300/n6k7Rjtbyh3PlEMOmty1pHNMaZT.jpg)
![The Runaway Dinosaur](https://image.tmdb.org/t/p/w300/rxuYCLXgZUEsbsUXAdhdsyxO3bn.jpg)
![Invincible](https://image.tmdb.org/t/p/w300/3EOsB3IU0VCZxrrCHu9rDmTnhIu.jpg)
![The Race of His Life](https://image.tmdb.org/t/p/w300/qfBQSFWMoqutuytnKvOqTDuvF3w.jpg)